21117902

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{1453}}^1$

素因数の和:1524

約数の個数: 24

約数和(自身を含む): 35122824

約数和(自身を除く): 14004922

約数列:

[1, 2, 13, 26, 43, 86, 169, 338, 559, 1118, 1453, 2906, 7267, 14534, 18889, 37778, 62479, 124958, 245557, 491114, 812227, 1624454, 10558951, 21117902]

約数ペア:

[(1, 21117902), (2, 10558951), (13, 1624454), (26, 812227), (43, 491114), (86, 245557), (169, 124958), (338, 62479), (559, 37778), (1118, 18889), (1453, 14534), (2906, 7267)]