9900950

素因数分解:

$2^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{2789}}^1$

素因数の和:2872

約数の個数: 24

約数和(自身を含む): 18681840

約数和(自身を除く): 8780890

約数列:

[1, 2, 5, 10, 25, 50, 71, 142, 355, 710, 1775, 2789, 3550, 5578, 13945, 27890, 69725, 139450, 198019, 396038, 990095, 1980190, 4950475, 9900950]

約数ペア:

[(1, 9900950), (2, 4950475), (5, 1980190), (10, 990095), (25, 396038), (50, 198019), (71, 139450), (142, 69725), (355, 27890), (710, 13945), (1775, 5578), (2789, 3550)]