21957494

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{167}}^1\times {\mathrm{389}}^1$

素因数の和:584

約数の個数: 24

約数和(自身を含む): 35970480

約数和(自身を除く): 14012986

約数列:

[1, 2, 13, 26, 167, 169, 334, 338, 389, 778, 2171, 4342, 5057, 10114, 28223, 56446, 64963, 65741, 129926, 131482, 844519, 1689038, 10978747, 21957494]

約数ペア:

[(1, 21957494), (2, 10978747), (13, 1689038), (26, 844519), (167, 131482), (169, 129926), (334, 65741), (338, 64963), (389, 56446), (778, 28223), (2171, 10114), (4342, 5057)]