21551686

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{521}}^1$

素因数の和:616

約数の個数: 32

約数和(自身を含む): 36656928

約数和(自身を除く): 15105242

約数列:

[1, 2, 13, 26, 37, 43, 74, 86, 481, 521, 559, 962, 1042, 1118, 1591, 3182, 6773, 13546, 19277, 20683, 22403, 38554, 41366, 44806, 250601, 291239, 501202, 582478, 828911, 1657822, 10775843, 21551686]

約数ペア:

[(1, 21551686), (2, 10775843), (13, 1657822), (26, 828911), (37, 582478), (43, 501202), (74, 291239), (86, 250601), (481, 44806), (521, 41366), (559, 38554), (962, 22403), (1042, 20683), (1118, 19277), (1591, 13546), (3182, 6773)]