20032820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 44083200

約数和(自身を除く): 24050380

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 79, 124, 155, 158, 310, 316, 395, 409, 620, 790, 818, 1580, 1636, 2045, 2449, 4090, 4898, 8180, 9796, 12245, 12679, 24490, 25358, 32311, 48980, 50716, 63395, 64622, 126790, 129244, 161555, 253580, 323110, 646220, 1001641, 2003282, 4006564, 5008205, 10016410, 20032820]

約数ペア:

[(1, 20032820), (2, 10016410), (4, 5008205), (5, 4006564), (10, 2003282), (20, 1001641), (31, 646220), (62, 323110), (79, 253580), (124, 161555), (155, 129244), (158, 126790), (310, 64622), (316, 63395), (395, 50716), (409, 48980), (620, 32311), (790, 25358), (818, 24490), (1580, 12679), (1636, 12245), (2045, 9796), (2449, 8180), (4090, 4898)]