20702045

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{263}}^1$

素因数の和:461

約数の個数: 32

約数和(自身を含む): 30868992

約数和(自身を除く): 10166947

約数列:

[1, 5, 7, 13, 35, 65, 91, 173, 263, 455, 865, 1211, 1315, 1841, 2249, 3419, 6055, 9205, 11245, 15743, 17095, 23933, 45499, 78715, 119665, 227495, 318493, 591487, 1592465, 2957435, 4140409, 20702045]

約数ペア:

[(1, 20702045), (5, 4140409), (7, 2957435), (13, 1592465), (35, 591487), (65, 318493), (91, 227495), (173, 119665), (263, 78715), (455, 45499), (865, 23933), (1211, 17095), (1315, 15743), (1841, 11245), (2249, 9205), (3419, 6055)]