21391452

素因数分解:

$2^2\times 3^4\times {\mathrm{103}}^1\times {\mathrm{641}}^1$

素因数の和:760

約数の個数: 60

約数和(自身を含む): 56552496

約数和(自身を除く): 35161044

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 103, 108, 162, 206, 309, 324, 412, 618, 641, 927, 1236, 1282, 1854, 1923, 2564, 2781, 3708, 3846, 5562, 5769, 7692, 8343, 11124, 11538, 16686, 17307, 23076, 33372, 34614, 51921, 66023, 69228, 103842, 132046, 198069, 207684, 264092, 396138, 594207, 792276, 1188414, 1782621, 2376828, 3565242, 5347863, 7130484, 10695726, 21391452]

約数ペア:

[(1, 21391452), (2, 10695726), (3, 7130484), (4, 5347863), (6, 3565242), (9, 2376828), (12, 1782621), (18, 1188414), (27, 792276), (36, 594207), (54, 396138), (81, 264092), (103, 207684), (108, 198069), (162, 132046), (206, 103842), (309, 69228), (324, 66023), (412, 51921), (618, 34614), (641, 33372), (927, 23076), (1236, 17307), (1282, 16686), (1854, 11538), (1923, 11124), (2564, 8343), (2781, 7692), (3708, 5769), (3846, 5562)]