72505225

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{131}}^2$

素因数の和:298

約数の個数: 27

約数和(自身を含む): 98103189

約数和(自身を除く): 25597964

約数列:

[1, 5, 13, 25, 65, 131, 169, 325, 655, 845, 1703, 3275, 4225, 8515, 17161, 22139, 42575, 85805, 110695, 223093, 429025, 553475, 1115465, 2900209, 5577325, 14501045, 72505225]

約数ペア:

[(1, 72505225), (5, 14501045), (13, 5577325), (25, 2900209), (65, 1115465), (131, 553475), (169, 429025), (325, 223093), (655, 110695), (845, 85805), (1703, 42575), (3275, 22139), (4225, 17161)]