20235874988

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{644701}}^1$

素因数の和:644790

約数の個数: 48

約数和(自身を含む): 43323974400

約数和(自身を除く): 23088099412

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 59, 76, 118, 133, 236, 266, 413, 532, 826, 1121, 1652, 2242, 4484, 7847, 15694, 31388, 644701, 1289402, 2578804, 4512907, 9025814, 12249319, 18051628, 24498638, 38037359, 48997276, 76074718, 85745233, 152149436, 171490466, 266261513, 342980932, 532523026, 722709821, 1065046052, 1445419642, 2890839284, 5058968747, 10117937494, 20235874988]

約数ペア:

[(1, 20235874988), (2, 10117937494), (4, 5058968747), (7, 2890839284), (14, 1445419642), (19, 1065046052), (28, 722709821), (38, 532523026), (59, 342980932), (76, 266261513), (118, 171490466), (133, 152149436), (236, 85745233), (266, 76074718), (413, 48997276), (532, 38037359), (826, 24498638), (1121, 18051628), (1652, 12249319), (2242, 9025814), (4484, 4512907), (7847, 2578804), (15694, 1289402), (31388, 644701)]