261551169

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{659}}^1$

素因数の和:906

約数の個数: 48

約数和(自身を含む): 436550400

約数和(自身を除く): 174999231

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 211, 627, 633, 659, 1881, 1899, 1977, 2321, 4009, 5931, 6963, 7249, 12027, 12521, 20889, 21747, 36081, 37563, 44099, 65241, 112689, 132297, 137731, 139049, 396891, 413193, 417147, 1239579, 1251441, 1529539, 2641931, 4588617, 7925793, 13765851, 23777379, 29061241, 87183723, 261551169]

約数ペア:

[(1, 261551169), (3, 87183723), (9, 29061241), (11, 23777379), (19, 13765851), (33, 7925793), (57, 4588617), (99, 2641931), (171, 1529539), (209, 1251441), (211, 1239579), (627, 417147), (633, 413193), (659, 396891), (1881, 139049), (1899, 137731), (1977, 132297), (2321, 112689), (4009, 65241), (5931, 44099), (6963, 37563), (7249, 36081), (12027, 21747), (12521, 20889)]