21218316

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{6827}}^1$

素因数の和:6878

約数の個数: 48

約数和(自身を含む): 58119936

約数和(自身を除く): 36901620

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 37, 42, 74, 84, 111, 148, 222, 259, 444, 518, 777, 1036, 1554, 3108, 6827, 13654, 20481, 27308, 40962, 47789, 81924, 95578, 143367, 191156, 252599, 286734, 505198, 573468, 757797, 1010396, 1515594, 1768193, 3031188, 3536386, 5304579, 7072772, 10609158, 21218316]

約数ペア:

[(1, 21218316), (2, 10609158), (3, 7072772), (4, 5304579), (6, 3536386), (7, 3031188), (12, 1768193), (14, 1515594), (21, 1010396), (28, 757797), (37, 573468), (42, 505198), (74, 286734), (84, 252599), (111, 191156), (148, 143367), (222, 95578), (259, 81924), (444, 47789), (518, 40962), (777, 27308), (1036, 20481), (1554, 13654), (3108, 6827)]