17988740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{11681}}^1$

素因数の和:11708

約数の個数: 48

約数和(自身を含む): 47101824

約数和(自身を除く): 29113084

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 11681, 23362, 46724, 58405, 81767, 116810, 128491, 163534, 233620, 256982, 327068, 408835, 513964, 642455, 817670, 899437, 1284910, 1635340, 1798874, 2569820, 3597748, 4497185, 8994370, 17988740]

約数ペア:

[(1, 17988740), (2, 8994370), (4, 4497185), (5, 3597748), (7, 2569820), (10, 1798874), (11, 1635340), (14, 1284910), (20, 899437), (22, 817670), (28, 642455), (35, 513964), (44, 408835), (55, 327068), (70, 256982), (77, 233620), (110, 163534), (140, 128491), (154, 116810), (220, 81767), (308, 58405), (385, 46724), (770, 23362), (1540, 11681)]