21220988

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{3229}}^1$

素因数の和:3317

約数の個数: 24

約数和(自身を含む): 39070080

約数和(自身を除く): 17849092

約数列:

[1, 2, 4, 31, 53, 62, 106, 124, 212, 1643, 3229, 3286, 6458, 6572, 12916, 100099, 171137, 200198, 342274, 400396, 684548, 5305247, 10610494, 21220988]

約数ペア:

[(1, 21220988), (2, 10610494), (4, 5305247), (31, 684548), (53, 400396), (62, 342274), (106, 200198), (124, 171137), (212, 100099), (1643, 12916), (3229, 6572), (3286, 6458)]