21228615

素因数分解:

$3^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{2347}}^1$

素因数の和:2428

約数の個数: 32

約数和(自身を含む): 38319360

約数和(自身を除く): 17090745

約数列:

[1, 3, 5, 9, 15, 27, 45, 67, 135, 201, 335, 603, 1005, 1809, 2347, 3015, 7041, 9045, 11735, 21123, 35205, 63369, 105615, 157249, 316845, 471747, 786245, 1415241, 2358735, 4245723, 7076205, 21228615]

約数ペア:

[(1, 21228615), (3, 7076205), (5, 4245723), (9, 2358735), (15, 1415241), (27, 786245), (45, 471747), (67, 316845), (135, 157249), (201, 105615), (335, 63369), (603, 35205), (1005, 21123), (1809, 11735), (2347, 9045), (3015, 7041)]