1988979837

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1\times {\mathrm{1949}}^1$

素因数の和:2293

約数の個数: 32

約数和(自身を含む): 2893363200

約数和(自身を除く): 904383363

約数列:

[1, 3, 13, 39, 137, 191, 411, 573, 1781, 1949, 2483, 5343, 5847, 7449, 25337, 26167, 76011, 78501, 267013, 340171, 372259, 801039, 1020513, 1116777, 3471169, 4839367, 10413507, 14518101, 50999483, 152998449, 662993279, 1988979837]

約数ペア:

[(1, 1988979837), (3, 662993279), (13, 152998449), (39, 50999483), (137, 14518101), (191, 10413507), (411, 4839367), (573, 3471169), (1781, 1116777), (1949, 1020513), (2483, 801039), (5343, 372259), (5847, 340171), (7449, 267013), (25337, 78501), (26167, 76011)]