38970040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1$

素因数の和:356

約数の個数: 64

約数和(自身を含む): 90921600

約数和(自身を除く): 51951560

約数列:

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

約数ペア:

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