20808515500

素因数分解:

$2^2\times 5^3\times {\mathrm{53}}^1\times {\mathrm{785227}}^1$

素因数の和:785299

約数の個数: 48

約数和(自身を含む): 46303324704

約数和(自身を除く): 25494809204

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 100, 106, 125, 212, 250, 265, 500, 530, 1060, 1325, 2650, 5300, 6625, 13250, 26500, 785227, 1570454, 3140908, 3926135, 7852270, 15704540, 19630675, 39261350, 41617031, 78522700, 83234062, 98153375, 166468124, 196306750, 208085155, 392613500, 416170310, 832340620, 1040425775, 2080851550, 4161703100, 5202128875, 10404257750, 20808515500]

約数ペア:

[(1, 20808515500), (2, 10404257750), (4, 5202128875), (5, 4161703100), (10, 2080851550), (20, 1040425775), (25, 832340620), (50, 416170310), (53, 392613500), (100, 208085155), (106, 196306750), (125, 166468124), (212, 98153375), (250, 83234062), (265, 78522700), (500, 41617031), (530, 39261350), (1060, 19630675), (1325, 15704540), (2650, 7852270), (5300, 3926135), (6625, 3140908), (13250, 1570454), (26500, 785227)]