20205625

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{2939}}^1$

素因数の和:2970

約数の個数: 20

約数和(自身を含む): 27553680

約数和(自身を除く): 7348055

約数列:

[1, 5, 11, 25, 55, 125, 275, 625, 1375, 2939, 6875, 14695, 32329, 73475, 161645, 367375, 808225, 1836875, 4041125, 20205625]

約数ペア:

[(1, 20205625), (5, 4041125), (11, 1836875), (25, 808225), (55, 367375), (125, 161645), (275, 73475), (625, 32329), (1375, 14695), (2939, 6875)]