1991286720

素因数分解:

$2^6\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{6229}}^1$

素因数の和:6292

約数の個数: 224

約数和(自身を含む): 7215835200

約数和(自身を除く): 5224548480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 37, 40, 45, 48, 54, 60, 64, 72, 74, 80, 90, 96, 108, 111, 120, 135, 144, 148, 160, 180, 185, 192, 216, 222, 240, 270, 288, 296, 320, 333, 360, 370, 432, 444, 480, 540, 555, 576, 592, 666, 720, 740, 864, 888, 960, 999, 1080, 1110, 1184, 1332, 1440, 1480, 1665, 1728, 1776, 1998, 2160, 2220, 2368, 2664, 2880, 2960, 3330, 3552, 3996, 4320, 4440, 4995, 5328, 5920, 6229, 6660, 7104, 7992, 8640, 8880, 9990, 10656, 11840, 12458, 13320, 15984, 17760, 18687, 19980, 21312, 24916, 26640, 31145, 31968, 35520, 37374, 39960, 49832, 53280, 56061, 62290, 63936, 74748, 79920, 93435, 99664, 106560, 112122, 124580, 149496, 159840, 168183, 186870, 199328, 224244, 230473, 249160, 280305, 298992, 319680, 336366, 373740, 398656, 448488, 460946, 498320, 560610, 597984, 672732, 691419, 747480, 840915, 896976, 921892, 996640, 1121220, 1152365, 1195968, 1345464, 1382838, 1494960, 1681830, 1793952, 1843784, 1993280, 2074257, 2242440, 2304730, 2690928, 2765676, 2989920, 3363660, 3457095, 3587904, 3687568, 4148514, 4484880, 4609460, 5381856, 5531352, 5979840, 6222771, 6727320, 6914190, 7375136, 8297028, 8969760, 9218920, 10371285, 10763712, 11062704, 12445542, 13454640, 13828380, 14750272, 16594056, 17939520, 18437840, 20742570, 22125408, 24891084, 26909280, 27656760, 31113855, 33188112, 36875680, 41485140, 44250816, 49782168, 53818560, 55313520, 62227710, 66376224, 73751360, 82970280, 99564336, 110627040, 124455420, 132752448, 165940560, 199128672, 221254080, 248910840, 331881120, 398257344, 497821680, 663762240, 995643360, 1991286720]

約数ペア:

[(1, 1991286720), (2, 995643360), (3, 663762240), (4, 497821680), (5, 398257344), (6, 331881120), (8, 248910840), (9, 221254080), (10, 199128672), (12, 165940560), (15, 132752448), (16, 124455420), (18, 110627040), (20, 99564336), (24, 82970280), (27, 73751360), (30, 66376224), (32, 62227710), (36, 55313520), (37, 53818560), (40, 49782168), (45, 44250816), (48, 41485140), (54, 36875680), (60, 33188112), (64, 31113855), (72, 27656760), (74, 26909280), (80, 24891084), (90, 22125408), (96, 20742570), (108, 18437840), (111, 17939520), (120, 16594056), (135, 14750272), (144, 13828380), (148, 13454640), (160, 12445542), (180, 11062704), (185, 10763712), (192, 10371285), (216, 9218920), (222, 8969760), (240, 8297028), (270, 7375136), (288, 6914190), (296, 6727320), (320, 6222771), (333, 5979840), (360, 5531352), (370, 5381856), (432, 4609460), (444, 4484880), (480, 4148514), (540, 3687568), (555, 3587904), (576, 3457095), (592, 3363660), (666, 2989920), (720, 2765676), (740, 2690928), (864, 2304730), (888, 2242440), (960, 2074257), (999, 1993280), (1080, 1843784), (1110, 1793952), (1184, 1681830), (1332, 1494960), (1440, 1382838), (1480, 1345464), (1665, 1195968), (1728, 1152365), (1776, 1121220), (1998, 996640), (2160, 921892), (2220, 896976), (2368, 840915), (2664, 747480), (2880, 691419), (2960, 672732), (3330, 597984), (3552, 560610), (3996, 498320), (4320, 460946), (4440, 448488), (4995, 398656), (5328, 373740), (5920, 336366), (6229, 319680), (6660, 298992), (7104, 280305), (7992, 249160), (8640, 230473), (8880, 224244), (9990, 199328), (10656, 186870), (11840, 168183), (12458, 159840), (13320, 149496), (15984, 124580), (17760, 112122), (18687, 106560), (19980, 99664), (21312, 93435), (24916, 79920), (26640, 74748), (31145, 63936), (31968, 62290), (35520, 56061), (37374, 53280), (39960, 49832)]