21289060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2213}}^1$

素因数の和:2272

約数の個数: 48

約数和(自身を含む): 49469616

約数和(自身を除く): 28180556

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2213, 2405, 4426, 4810, 8852, 9620, 11065, 22130, 28769, 44260, 57538, 81881, 115076, 143845, 163762, 287690, 327524, 409405, 575380, 818810, 1064453, 1637620, 2128906, 4257812, 5322265, 10644530, 21289060]

約数ペア:

[(1, 21289060), (2, 10644530), (4, 5322265), (5, 4257812), (10, 2128906), (13, 1637620), (20, 1064453), (26, 818810), (37, 575380), (52, 409405), (65, 327524), (74, 287690), (130, 163762), (148, 143845), (185, 115076), (260, 81881), (370, 57538), (481, 44260), (740, 28769), (962, 22130), (1924, 11065), (2213, 9620), (2405, 8852), (4426, 4810)]