20473375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{293}}^1$

素因数の和:364

約数の個数: 32

約数和(自身を含む): 28252224

約数和(自身を除く): 7778849

約数列:

[1, 5, 13, 25, 43, 65, 125, 215, 293, 325, 559, 1075, 1465, 1625, 2795, 3809, 5375, 7325, 12599, 13975, 19045, 36625, 62995, 69875, 95225, 163787, 314975, 476125, 818935, 1574875, 4094675, 20473375]

約数ペア:

[(1, 20473375), (5, 4094675), (13, 1574875), (25, 818935), (43, 476125), (65, 314975), (125, 163787), (215, 95225), (293, 69875), (325, 62995), (559, 36625), (1075, 19045), (1465, 13975), (1625, 12599), (2795, 7325), (3809, 5375)]