71727020

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{431}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 154804608

約数和(自身を除く): 83077588

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 157, 212, 265, 314, 431, 530, 628, 785, 862, 1060, 1570, 1724, 2155, 3140, 4310, 8321, 8620, 16642, 22843, 33284, 41605, 45686, 67667, 83210, 91372, 114215, 135334, 166420, 228430, 270668, 338335, 456860, 676670, 1353340, 3586351, 7172702, 14345404, 17931755, 35863510, 71727020]

約数ペア:

[(1, 71727020), (2, 35863510), (4, 17931755), (5, 14345404), (10, 7172702), (20, 3586351), (53, 1353340), (106, 676670), (157, 456860), (212, 338335), (265, 270668), (314, 228430), (431, 166420), (530, 135334), (628, 114215), (785, 91372), (862, 83210), (1060, 67667), (1570, 45686), (1724, 41605), (2155, 33284), (3140, 22843), (4310, 16642), (8321, 8620)]