257517325

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{18427}}^1$

素因数の和:18493

約数の個数: 24

約数和(自身を含む): 351901088

約数和(自身を除く): 94383763

約数列:

[1, 5, 13, 25, 43, 65, 215, 325, 559, 1075, 2795, 13975, 18427, 92135, 239551, 460675, 792361, 1197755, 3961805, 5988775, 10300693, 19809025, 51503465, 257517325]

約数ペア:

[(1, 257517325), (5, 51503465), (13, 19809025), (25, 10300693), (43, 5988775), (65, 3961805), (215, 1197755), (325, 792361), (559, 460675), (1075, 239551), (2795, 92135), (13975, 18427)]