81798120

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:169

約数の個数: 256

約数和(自身を含む): 295488000

約数和(自身を除く): 213689880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 27, 30, 36, 37, 40, 45, 46, 54, 60, 69, 72, 74, 89, 90, 92, 108, 111, 115, 120, 135, 138, 148, 178, 180, 184, 185, 207, 216, 222, 230, 267, 270, 276, 296, 333, 345, 356, 360, 370, 414, 444, 445, 460, 534, 540, 552, 555, 621, 666, 690, 712, 740, 801, 828, 851, 888, 890, 920, 999, 1035, 1068, 1080, 1110, 1242, 1332, 1335, 1380, 1480, 1602, 1656, 1665, 1702, 1780, 1998, 2047, 2070, 2136, 2220, 2403, 2484, 2553, 2664, 2670, 2760, 3105, 3204, 3293, 3330, 3404, 3560, 3996, 4005, 4094, 4140, 4255, 4440, 4806, 4968, 4995, 5106, 5340, 6141, 6210, 6408, 6586, 6660, 6808, 7659, 7992, 8010, 8188, 8280, 8510, 9612, 9879, 9990, 10212, 10235, 10680, 12015, 12282, 12420, 12765, 13172, 13320, 15318, 16020, 16376, 16465, 17020, 18423, 19224, 19758, 19980, 20424, 20470, 22977, 24030, 24564, 24840, 25530, 26344, 29637, 30636, 30705, 32040, 32930, 34040, 36846, 38295, 39516, 39960, 40940, 45954, 48060, 49128, 49395, 51060, 55269, 59274, 61272, 61410, 65860, 73692, 75739, 76590, 79032, 81880, 88911, 91908, 92115, 96120, 98790, 102120, 110538, 114885, 118548, 122820, 131720, 147384, 148185, 151478, 153180, 177822, 183816, 184230, 197580, 221076, 227217, 229770, 237096, 245640, 276345, 296370, 302956, 306360, 355644, 368460, 378695, 395160, 442152, 444555, 454434, 459540, 552690, 592740, 605912, 681651, 711288, 736920, 757390, 889110, 908868, 919080, 1105380, 1136085, 1185480, 1363302, 1514780, 1778220, 1817736, 2044953, 2210760, 2272170, 2726604, 3029560, 3408255, 3556440, 4089906, 4544340, 5453208, 6816510, 8179812, 9088680, 10224765, 13633020, 16359624, 20449530, 27266040, 40899060, 81798120]

約数ペア:

[(1, 81798120), (2, 40899060), (3, 27266040), (4, 20449530), (5, 16359624), (6, 13633020), (8, 10224765), (9, 9088680), (10, 8179812), (12, 6816510), (15, 5453208), (18, 4544340), (20, 4089906), (23, 3556440), (24, 3408255), (27, 3029560), (30, 2726604), (36, 2272170), (37, 2210760), (40, 2044953), (45, 1817736), (46, 1778220), (54, 1514780), (60, 1363302), (69, 1185480), (72, 1136085), (74, 1105380), (89, 919080), (90, 908868), (92, 889110), (108, 757390), (111, 736920), (115, 711288), (120, 681651), (135, 605912), (138, 592740), (148, 552690), (178, 459540), (180, 454434), (184, 444555), (185, 442152), (207, 395160), (216, 378695), (222, 368460), (230, 355644), (267, 306360), (270, 302956), (276, 296370), (296, 276345), (333, 245640), (345, 237096), (356, 229770), (360, 227217), (370, 221076), (414, 197580), (444, 184230), (445, 183816), (460, 177822), (534, 153180), (540, 151478), (552, 148185), (555, 147384), (621, 131720), (666, 122820), (690, 118548), (712, 114885), (740, 110538), (801, 102120), (828, 98790), (851, 96120), (888, 92115), (890, 91908), (920, 88911), (999, 81880), (1035, 79032), (1068, 76590), (1080, 75739), (1110, 73692), (1242, 65860), (1332, 61410), (1335, 61272), (1380, 59274), (1480, 55269), (1602, 51060), (1656, 49395), (1665, 49128), (1702, 48060), (1780, 45954), (1998, 40940), (2047, 39960), (2070, 39516), (2136, 38295), (2220, 36846), (2403, 34040), (2484, 32930), (2553, 32040), (2664, 30705), (2670, 30636), (2760, 29637), (3105, 26344), (3204, 25530), (3293, 24840), (3330, 24564), (3404, 24030), (3560, 22977), (3996, 20470), (4005, 20424), (4094, 19980), (4140, 19758), (4255, 19224), (4440, 18423), (4806, 17020), (4968, 16465), (4995, 16376), (5106, 16020), (5340, 15318), (6141, 13320), (6210, 13172), (6408, 12765), (6586, 12420), (6660, 12282), (6808, 12015), (7659, 10680), (7992, 10235), (8010, 10212), (8188, 9990), (8280, 9879), (8510, 9612)]