77940080

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1$

素因数の和:358

約数の個数: 80

約数和(自身を含む): 187904640

約数和(自身を除く): 109964560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 139, 163, 172, 215, 278, 326, 344, 430, 556, 652, 688, 695, 815, 860, 1112, 1304, 1390, 1630, 1720, 2224, 2608, 2780, 3260, 3440, 5560, 5977, 6520, 7009, 11120, 11954, 13040, 14018, 22657, 23908, 28036, 29885, 35045, 45314, 47816, 56072, 59770, 70090, 90628, 95632, 112144, 113285, 119540, 140180, 181256, 226570, 239080, 280360, 362512, 453140, 478160, 560720, 906280, 974251, 1812560, 1948502, 3897004, 4871255, 7794008, 9742510, 15588016, 19485020, 38970040, 77940080]

約数ペア:

[(1, 77940080), (2, 38970040), (4, 19485020), (5, 15588016), (8, 9742510), (10, 7794008), (16, 4871255), (20, 3897004), (40, 1948502), (43, 1812560), (80, 974251), (86, 906280), (139, 560720), (163, 478160), (172, 453140), (215, 362512), (278, 280360), (326, 239080), (344, 226570), (430, 181256), (556, 140180), (652, 119540), (688, 113285), (695, 112144), (815, 95632), (860, 90628), (1112, 70090), (1304, 59770), (1390, 56072), (1630, 47816), (1720, 45314), (2224, 35045), (2608, 29885), (2780, 28036), (3260, 23908), (3440, 22657), (5560, 14018), (5977, 13040), (6520, 11954), (7009, 11120)]