20681715

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1\times {\mathrm{397}}^1$

素因数の和:579

約数の個数: 32

約数和(自身を含む): 34845696

約数和(自身を除く): 14163981

約数列:

[1, 3, 5, 15, 23, 69, 115, 151, 345, 397, 453, 755, 1191, 1985, 2265, 3473, 5955, 9131, 10419, 17365, 27393, 45655, 52095, 59947, 136965, 179841, 299735, 899205, 1378781, 4136343, 6893905, 20681715]

約数ペア:

[(1, 20681715), (3, 6893905), (5, 4136343), (15, 1378781), (23, 899205), (69, 299735), (115, 179841), (151, 136965), (345, 59947), (397, 52095), (453, 45655), (755, 27393), (1191, 17365), (1985, 10419), (2265, 9131), (3473, 5955)]