20578550

素因数分解:

$2^1\times 5^2\times {\mathrm{97}}^1\times {\mathrm{4243}}^1$

素因数の和:4352

約数の個数: 24

約数和(自身を含む): 38679816

約数和(自身を除く): 18101266

約数列:

[1, 2, 5, 10, 25, 50, 97, 194, 485, 970, 2425, 4243, 4850, 8486, 21215, 42430, 106075, 212150, 411571, 823142, 2057855, 4115710, 10289275, 20578550]

約数ペア:

[(1, 20578550), (2, 10289275), (5, 4115710), (10, 2057855), (25, 823142), (50, 411571), (97, 212150), (194, 106075), (485, 42430), (970, 21215), (2425, 8486), (4243, 4850)]