20888715

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{317}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 35168256

約数和(自身を除く): 14279541

約数列:

[1, 3, 5, 15, 23, 69, 115, 191, 317, 345, 573, 951, 955, 1585, 2865, 4393, 4755, 7291, 13179, 21873, 21965, 36455, 60547, 65895, 109365, 181641, 302735, 908205, 1392581, 4177743, 6962905, 20888715]

約数ペア:

[(1, 20888715), (3, 6962905), (5, 4177743), (15, 1392581), (23, 908205), (69, 302735), (115, 181641), (191, 109365), (317, 65895), (345, 60547), (573, 36455), (951, 21965), (955, 21873), (1585, 13179), (2865, 7291), (4393, 4755)]