20171668

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{587}}^1$

素因数の和:684

約数の個数: 36

約数和(自身を含む): 39414816

約数和(自身を除く): 19243148

約数列:

[1, 2, 4, 11, 22, 44, 71, 121, 142, 242, 284, 484, 587, 781, 1174, 1562, 2348, 3124, 6457, 8591, 12914, 17182, 25828, 34364, 41677, 71027, 83354, 142054, 166708, 284108, 458447, 916894, 1833788, 5042917, 10085834, 20171668]

約数ペア:

[(1, 20171668), (2, 10085834), (4, 5042917), (11, 1833788), (22, 916894), (44, 458447), (71, 284108), (121, 166708), (142, 142054), (242, 83354), (284, 71027), (484, 41677), (587, 34364), (781, 25828), (1174, 17182), (1562, 12914), (2348, 8591), (3124, 6457)]