18747430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{499}}^1$

素因数の和:553

約数の個数: 48

約数和(自身を含む): 38682000

約数和(自身を除く): 19934570

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 289, 442, 499, 578, 998, 1105, 1445, 2210, 2495, 2890, 3757, 4990, 6487, 7514, 8483, 12974, 16966, 18785, 32435, 37570, 42415, 64870, 84830, 110279, 144211, 220558, 288422, 551395, 721055, 1102790, 1442110, 1874743, 3749486, 9373715, 18747430]

約数ペア:

[(1, 18747430), (2, 9373715), (5, 3749486), (10, 1874743), (13, 1442110), (17, 1102790), (26, 721055), (34, 551395), (65, 288422), (85, 220558), (130, 144211), (170, 110279), (221, 84830), (289, 64870), (442, 42415), (499, 37570), (578, 32435), (998, 18785), (1105, 16966), (1445, 12974), (2210, 8483), (2495, 7514), (2890, 6487), (3757, 4990)]