20208875

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:228

約数の個数: 32

約数和(自身を含む): 27156480

約数和(自身を除く): 6947605

約数列:

[1, 5, 19, 25, 67, 95, 125, 127, 335, 475, 635, 1273, 1675, 2375, 2413, 3175, 6365, 8375, 8509, 12065, 15875, 31825, 42545, 60325, 159125, 161671, 212725, 301625, 808355, 1063625, 4041775, 20208875]

約数ペア:

[(1, 20208875), (5, 4041775), (19, 1063625), (25, 808355), (67, 301625), (95, 212725), (125, 161671), (127, 159125), (335, 60325), (475, 42545), (635, 31825), (1273, 15875), (1675, 12065), (2375, 8509), (2413, 8375), (3175, 6365)]