81018280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:291

約数の個数: 128

約数和(自身を含む): 222969600

約数和(自身を除く): 141951320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 97, 133, 140, 152, 157, 190, 194, 266, 280, 314, 380, 388, 485, 532, 628, 665, 679, 760, 776, 785, 970, 1064, 1099, 1256, 1330, 1358, 1570, 1843, 1940, 2198, 2660, 2716, 2983, 3140, 3395, 3686, 3880, 4396, 5320, 5432, 5495, 5966, 6280, 6790, 7372, 8792, 9215, 10990, 11932, 12901, 13580, 14744, 14915, 15229, 18430, 20881, 21980, 23864, 25802, 27160, 29830, 30458, 36860, 41762, 43960, 51604, 59660, 60916, 64505, 73720, 76145, 83524, 103208, 104405, 106603, 119320, 121832, 129010, 152290, 167048, 208810, 213206, 258020, 289351, 304580, 417620, 426412, 516040, 533015, 578702, 609160, 835240, 852824, 1066030, 1157404, 1446755, 2025457, 2132060, 2314808, 2893510, 4050914, 4264120, 5787020, 8101828, 10127285, 11574040, 16203656, 20254570, 40509140, 81018280]

約数ペア:

[(1, 81018280), (2, 40509140), (4, 20254570), (5, 16203656), (7, 11574040), (8, 10127285), (10, 8101828), (14, 5787020), (19, 4264120), (20, 4050914), (28, 2893510), (35, 2314808), (38, 2132060), (40, 2025457), (56, 1446755), (70, 1157404), (76, 1066030), (95, 852824), (97, 835240), (133, 609160), (140, 578702), (152, 533015), (157, 516040), (190, 426412), (194, 417620), (266, 304580), (280, 289351), (314, 258020), (380, 213206), (388, 208810), (485, 167048), (532, 152290), (628, 129010), (665, 121832), (679, 119320), (760, 106603), (776, 104405), (785, 103208), (970, 83524), (1064, 76145), (1099, 73720), (1256, 64505), (1330, 60916), (1358, 59660), (1570, 51604), (1843, 43960), (1940, 41762), (2198, 36860), (2660, 30458), (2716, 29830), (2983, 27160), (3140, 25802), (3395, 23864), (3686, 21980), (3880, 20881), (4396, 18430), (5320, 15229), (5432, 14915), (5495, 14744), (5966, 13580), (6280, 12901), (6790, 11932), (7372, 10990), (8792, 9215)]