20472025

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 31426560

約数和(自身を除く): 10954535

約数列:

[1, 5, 7, 19, 25, 35, 47, 95, 131, 133, 175, 235, 329, 475, 655, 665, 893, 917, 1175, 1645, 2489, 3275, 3325, 4465, 4585, 6157, 6251, 8225, 12445, 17423, 22325, 22925, 30785, 31255, 43099, 62225, 87115, 116983, 153925, 156275, 215495, 435575, 584915, 818881, 1077475, 2924575, 4094405, 20472025]

約数ペア:

[(1, 20472025), (5, 4094405), (7, 2924575), (19, 1077475), (25, 818881), (35, 584915), (47, 435575), (95, 215495), (131, 156275), (133, 153925), (175, 116983), (235, 87115), (329, 62225), (475, 43099), (655, 31255), (665, 30785), (893, 22925), (917, 22325), (1175, 17423), (1645, 12445), (2489, 8225), (3275, 6251), (3325, 6157), (4465, 4585)]