20651515

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{1609}}^1$

素因数の和:1782

約数の個数: 16

約数和(自身を含む): 26429760

約数和(自身を除く): 5778245

約数列:

[1, 5, 17, 85, 151, 755, 1609, 2567, 8045, 12835, 27353, 136765, 242959, 1214795, 4130303, 20651515]

約数ペア:

[(1, 20651515), (5, 4130303), (17, 1214795), (85, 242959), (151, 136765), (755, 27353), (1609, 12835), (2567, 8045)]