20855500

素因数分解:

$2^2\times 5^3\times {\mathrm{53}}^1\times {\mathrm{787}}^1$

素因数の和:859

約数の個数: 48

約数和(自身を含む): 46466784

約数和(自身を除く): 25611284

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 100, 106, 125, 212, 250, 265, 500, 530, 787, 1060, 1325, 1574, 2650, 3148, 3935, 5300, 6625, 7870, 13250, 15740, 19675, 26500, 39350, 41711, 78700, 83422, 98375, 166844, 196750, 208555, 393500, 417110, 834220, 1042775, 2085550, 4171100, 5213875, 10427750, 20855500]

約数ペア:

[(1, 20855500), (2, 10427750), (4, 5213875), (5, 4171100), (10, 2085550), (20, 1042775), (25, 834220), (50, 417110), (53, 393500), (100, 208555), (106, 196750), (125, 166844), (212, 98375), (250, 83422), (265, 78700), (500, 41711), (530, 39350), (787, 26500), (1060, 19675), (1325, 15740), (1574, 13250), (2650, 7870), (3148, 6625), (3935, 5300)]