21440406

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{8867}}^1$

素因数の和:8916

約数の個数: 32

約数和(自身を含む): 47674368

約数和(自身を除く): 26233962

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 62, 78, 93, 186, 403, 806, 1209, 2418, 8867, 17734, 26601, 53202, 115271, 230542, 274877, 345813, 549754, 691626, 824631, 1649262, 3573401, 7146802, 10720203, 21440406]

約数ペア:

[(1, 21440406), (2, 10720203), (3, 7146802), (6, 3573401), (13, 1649262), (26, 824631), (31, 691626), (39, 549754), (62, 345813), (78, 274877), (93, 230542), (186, 115271), (403, 53202), (806, 26601), (1209, 17734), (2418, 8867)]