21038736

素因数分解:

$2^4\times 3^1\times {\mathrm{163}}^1\times {\mathrm{2689}}^1$

素因数の和:2863

約数の個数: 40

約数和(自身を含む): 54703840

約数和(自身を除く): 33665104

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 163, 326, 489, 652, 978, 1304, 1956, 2608, 2689, 3912, 5378, 7824, 8067, 10756, 16134, 21512, 32268, 43024, 64536, 129072, 438307, 876614, 1314921, 1753228, 2629842, 3506456, 5259684, 7012912, 10519368, 21038736]

約数ペア:

[(1, 21038736), (2, 10519368), (3, 7012912), (4, 5259684), (6, 3506456), (8, 2629842), (12, 1753228), (16, 1314921), (24, 876614), (48, 438307), (163, 129072), (326, 64536), (489, 43024), (652, 32268), (978, 21512), (1304, 16134), (1956, 10756), (2608, 8067), (2689, 7824), (3912, 5378)]