20578900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{10831}}^1$

素因数の和:10864

約数の個数: 36

約数和(自身を含む): 47010880

約数和(自身を除く): 26431980

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 10831, 21662, 43324, 54155, 108310, 205789, 216620, 270775, 411578, 541550, 823156, 1028945, 1083100, 2057890, 4115780, 5144725, 10289450, 20578900]

約数ペア:

[(1, 20578900), (2, 10289450), (4, 5144725), (5, 4115780), (10, 2057890), (19, 1083100), (20, 1028945), (25, 823156), (38, 541550), (50, 411578), (76, 270775), (95, 216620), (100, 205789), (190, 108310), (380, 54155), (475, 43324), (950, 21662), (1900, 10831)]