21499088

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2521}}^1$

素因数の和:2583

約数の個数: 40

約数和(自身を含む): 45971016

約数和(自身を除く): 24471928

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 208, 328, 533, 656, 1066, 2132, 2521, 4264, 5042, 8528, 10084, 20168, 32773, 40336, 65546, 103361, 131092, 206722, 262184, 413444, 524368, 826888, 1343693, 1653776, 2687386, 5374772, 10749544, 21499088]

約数ペア:

[(1, 21499088), (2, 10749544), (4, 5374772), (8, 2687386), (13, 1653776), (16, 1343693), (26, 826888), (41, 524368), (52, 413444), (82, 262184), (104, 206722), (164, 131092), (208, 103361), (328, 65546), (533, 40336), (656, 32773), (1066, 20168), (2132, 10084), (2521, 8528), (4264, 5042)]