19721286

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^2\times {\mathrm{2161}}^1$

素因数の和:2198

約数の個数: 48

約数和(自身を含む): 47477520

約数和(自身を除く): 27756234

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 117, 169, 234, 338, 351, 507, 702, 1014, 1521, 2161, 3042, 4322, 4563, 6483, 9126, 12966, 19449, 28093, 38898, 56186, 58347, 84279, 116694, 168558, 252837, 365209, 505674, 730418, 758511, 1095627, 1517022, 2191254, 3286881, 6573762, 9860643, 19721286]

約数ペア:

[(1, 19721286), (2, 9860643), (3, 6573762), (6, 3286881), (9, 2191254), (13, 1517022), (18, 1095627), (26, 758511), (27, 730418), (39, 505674), (54, 365209), (78, 252837), (117, 168558), (169, 116694), (234, 84279), (338, 58347), (351, 56186), (507, 38898), (702, 28093), (1014, 19449), (1521, 12966), (2161, 9126), (3042, 6483), (4322, 4563)]