81278640

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:178

約数の個数: 240

約数和(自身を含む): 293293728

約数和(自身を除く): 212015088

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 37, 40, 45, 48, 54, 60, 72, 74, 80, 81, 90, 108, 111, 113, 120, 135, 144, 148, 162, 180, 185, 216, 222, 226, 240, 243, 270, 296, 324, 333, 339, 360, 370, 405, 432, 444, 452, 486, 540, 555, 565, 592, 648, 666, 678, 720, 740, 810, 888, 904, 972, 999, 1017, 1080, 1110, 1130, 1215, 1296, 1332, 1356, 1480, 1620, 1665, 1695, 1776, 1808, 1944, 1998, 2034, 2160, 2220, 2260, 2430, 2664, 2712, 2960, 2997, 3051, 3240, 3330, 3390, 3888, 3996, 4068, 4181, 4440, 4520, 4860, 4995, 5085, 5328, 5424, 5994, 6102, 6480, 6660, 6780, 7992, 8136, 8362, 8880, 8991, 9040, 9153, 9720, 9990, 10170, 11988, 12204, 12543, 13320, 13560, 14985, 15255, 15984, 16272, 16724, 17982, 18306, 19440, 19980, 20340, 20905, 23976, 24408, 25086, 26640, 27120, 27459, 29970, 30510, 33448, 35964, 36612, 37629, 39960, 40680, 41810, 44955, 45765, 47952, 48816, 50172, 54918, 59940, 61020, 62715, 66896, 71928, 73224, 75258, 79920, 81360, 83620, 89910, 91530, 100344, 109836, 112887, 119880, 122040, 125430, 137295, 143856, 146448, 150516, 167240, 179820, 183060, 188145, 200688, 219672, 225774, 239760, 244080, 250860, 274590, 301032, 334480, 338661, 359640, 366120, 376290, 439344, 451548, 501720, 549180, 564435, 602064, 677322, 719280, 732240, 752580, 903096, 1003440, 1015983, 1098360, 1128870, 1354644, 1505160, 1693305, 1806192, 2031966, 2196720, 2257740, 2709288, 3010320, 3386610, 4063932, 4515480, 5079915, 5418576, 6773220, 8127864, 9030960, 10159830, 13546440, 16255728, 20319660, 27092880, 40639320, 81278640]

約数ペア:

[(1, 81278640), (2, 40639320), (3, 27092880), (4, 20319660), (5, 16255728), (6, 13546440), (8, 10159830), (9, 9030960), (10, 8127864), (12, 6773220), (15, 5418576), (16, 5079915), (18, 4515480), (20, 4063932), (24, 3386610), (27, 3010320), (30, 2709288), (36, 2257740), (37, 2196720), (40, 2031966), (45, 1806192), (48, 1693305), (54, 1505160), (60, 1354644), (72, 1128870), (74, 1098360), (80, 1015983), (81, 1003440), (90, 903096), (108, 752580), (111, 732240), (113, 719280), (120, 677322), (135, 602064), (144, 564435), (148, 549180), (162, 501720), (180, 451548), (185, 439344), (216, 376290), (222, 366120), (226, 359640), (240, 338661), (243, 334480), (270, 301032), (296, 274590), (324, 250860), (333, 244080), (339, 239760), (360, 225774), (370, 219672), (405, 200688), (432, 188145), (444, 183060), (452, 179820), (486, 167240), (540, 150516), (555, 146448), (565, 143856), (592, 137295), (648, 125430), (666, 122040), (678, 119880), (720, 112887), (740, 109836), (810, 100344), (888, 91530), (904, 89910), (972, 83620), (999, 81360), (1017, 79920), (1080, 75258), (1110, 73224), (1130, 71928), (1215, 66896), (1296, 62715), (1332, 61020), (1356, 59940), (1480, 54918), (1620, 50172), (1665, 48816), (1695, 47952), (1776, 45765), (1808, 44955), (1944, 41810), (1998, 40680), (2034, 39960), (2160, 37629), (2220, 36612), (2260, 35964), (2430, 33448), (2664, 30510), (2712, 29970), (2960, 27459), (2997, 27120), (3051, 26640), (3240, 25086), (3330, 24408), (3390, 23976), (3888, 20905), (3996, 20340), (4068, 19980), (4181, 19440), (4440, 18306), (4520, 17982), (4860, 16724), (4995, 16272), (5085, 15984), (5328, 15255), (5424, 14985), (5994, 13560), (6102, 13320), (6480, 12543), (6660, 12204), (6780, 11988), (7992, 10170), (8136, 9990), (8362, 9720), (8880, 9153), (8991, 9040)]