19981460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{3457}}^1$

素因数の和:3500

約数の個数: 36

約数和(自身を含む): 44587452

約数和(自身を除く): 24605992

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 3457, 5780, 6914, 13828, 17285, 34570, 58769, 69140, 117538, 235076, 293845, 587690, 999073, 1175380, 1998146, 3996292, 4995365, 9990730, 19981460]

約数ペア:

[(1, 19981460), (2, 9990730), (4, 4995365), (5, 3996292), (10, 1998146), (17, 1175380), (20, 999073), (34, 587690), (68, 293845), (85, 235076), (170, 117538), (289, 69140), (340, 58769), (578, 34570), (1156, 17285), (1445, 13828), (2890, 6914), (3457, 5780)]