28165700

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{3967}}^1$

素因数の和:4052

約数の個数: 36

約数和(自身を含む): 61996032

約数和(自身を除く): 33830332

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 710, 1420, 1775, 3550, 3967, 7100, 7934, 15868, 19835, 39670, 79340, 99175, 198350, 281657, 396700, 563314, 1126628, 1408285, 2816570, 5633140, 7041425, 14082850, 28165700]

約数ペア:

[(1, 28165700), (2, 14082850), (4, 7041425), (5, 5633140), (10, 2816570), (20, 1408285), (25, 1126628), (50, 563314), (71, 396700), (100, 281657), (142, 198350), (284, 99175), (355, 79340), (710, 39670), (1420, 19835), (1775, 15868), (3550, 7934), (3967, 7100)]