20497780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{599}}^1$

素因数の和:696

約数の個数: 48

約数和(自身を含む): 45360000

約数和(自身を除く): 24862220

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 59, 116, 118, 145, 236, 290, 295, 580, 590, 599, 1180, 1198, 1711, 2396, 2995, 3422, 5990, 6844, 8555, 11980, 17110, 17371, 34220, 34742, 35341, 69484, 70682, 86855, 141364, 173710, 176705, 347420, 353410, 706820, 1024889, 2049778, 4099556, 5124445, 10248890, 20497780]

約数ペア:

[(1, 20497780), (2, 10248890), (4, 5124445), (5, 4099556), (10, 2049778), (20, 1024889), (29, 706820), (58, 353410), (59, 347420), (116, 176705), (118, 173710), (145, 141364), (236, 86855), (290, 70682), (295, 69484), (580, 35341), (590, 34742), (599, 34220), (1180, 17371), (1198, 17110), (1711, 11980), (2396, 8555), (2995, 6844), (3422, 5990)]