20381660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{283}}^1$

素因数の和:582

約数の個数: 48

約数和(自身を含む): 46423776

約数和(自身を除く): 26042116

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 277, 283, 554, 566, 1108, 1132, 1385, 1415, 2770, 2830, 3601, 3679, 5540, 5660, 7202, 7358, 14404, 14716, 18005, 18395, 36010, 36790, 72020, 73580, 78391, 156782, 313564, 391955, 783910, 1019083, 1567820, 2038166, 4076332, 5095415, 10190830, 20381660]

約数ペア:

[(1, 20381660), (2, 10190830), (4, 5095415), (5, 4076332), (10, 2038166), (13, 1567820), (20, 1019083), (26, 783910), (52, 391955), (65, 313564), (130, 156782), (260, 78391), (277, 73580), (283, 72020), (554, 36790), (566, 36010), (1108, 18395), (1132, 18005), (1385, 14716), (1415, 14404), (2770, 7358), (2830, 7202), (3601, 5660), (3679, 5540)]