19251999

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:461

約数の個数: 40

約数和(自身を含む): 31711680

約数和(自身を除く): 12459681

約数列:

[1, 3, 9, 13, 27, 39, 47, 81, 117, 141, 351, 389, 423, 611, 1053, 1167, 1269, 1833, 3501, 3807, 5057, 5499, 10503, 15171, 16497, 18283, 31509, 45513, 49491, 54849, 136539, 164547, 237679, 409617, 493641, 713037, 1480923, 2139111, 6417333, 19251999]

約数ペア:

[(1, 19251999), (3, 6417333), (9, 2139111), (13, 1480923), (27, 713037), (39, 493641), (47, 409617), (81, 237679), (117, 164547), (141, 136539), (351, 54849), (389, 49491), (423, 45513), (611, 31509), (1053, 18283), (1167, 16497), (1269, 15171), (1833, 10503), (3501, 5499), (3807, 5057)]