20131989241

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{647}}^1\times {\mathrm{3137}}^1$

素因数の和:3913

約数の個数: 32

約数和(自身を含む): 25051783680

約数和(自身を除く): 4919794439

約数列:

[1, 7, 13, 91, 109, 647, 763, 1417, 3137, 4529, 8411, 9919, 21959, 40781, 58877, 70523, 285467, 341933, 493661, 916799, 2029639, 2393531, 4445129, 6417593, 14207473, 26385307, 31115903, 184697149, 221230651, 1548614557, 2875998463, 20131989241]

約数ペア:

[(1, 20131989241), (7, 2875998463), (13, 1548614557), (91, 221230651), (109, 184697149), (647, 31115903), (763, 26385307), (1417, 14207473), (3137, 6417593), (4529, 4445129), (8411, 2393531), (9919, 2029639), (21959, 916799), (40781, 493661), (58877, 341933), (70523, 285467)]