64397515

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{20219}}^1$

素因数の和:20251

約数の個数: 24

約数和(自身を含む): 96813360

約数和(自身を除く): 32415845

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 20219, 101095, 141533, 262847, 707665, 990731, 1314235, 1839929, 4953655, 9199645, 12879503, 64397515]

約数ペア:

[(1, 64397515), (5, 12879503), (7, 9199645), (13, 4953655), (35, 1839929), (49, 1314235), (65, 990731), (91, 707665), (245, 262847), (455, 141533), (637, 101095), (3185, 20219)]