21649212

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{277}}^1$

素因数の和:467

約数の個数: 72

約数和(自身を含む): 59500896

約数和(自身を除く): 37851684

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 167, 234, 277, 334, 468, 501, 554, 668, 831, 1002, 1108, 1503, 1662, 2004, 2171, 2493, 3006, 3324, 3601, 4342, 4986, 6012, 6513, 7202, 8684, 9972, 10803, 13026, 14404, 19539, 21606, 26052, 32409, 39078, 43212, 46259, 64818, 78156, 92518, 129636, 138777, 185036, 277554, 416331, 555108, 601367, 832662, 1202734, 1665324, 1804101, 2405468, 3608202, 5412303, 7216404, 10824606, 21649212]

約数ペア:

[(1, 21649212), (2, 10824606), (3, 7216404), (4, 5412303), (6, 3608202), (9, 2405468), (12, 1804101), (13, 1665324), (18, 1202734), (26, 832662), (36, 601367), (39, 555108), (52, 416331), (78, 277554), (117, 185036), (156, 138777), (167, 129636), (234, 92518), (277, 78156), (334, 64818), (468, 46259), (501, 43212), (554, 39078), (668, 32409), (831, 26052), (1002, 21606), (1108, 19539), (1503, 14404), (1662, 13026), (2004, 10803), (2171, 9972), (2493, 8684), (3006, 7202), (3324, 6513), (3601, 6012), (4342, 4986)]