20823160

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^2\times {\mathrm{619}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 48601800

約数和(自身を除く): 27778640

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 619, 841, 1160, 1238, 1682, 2476, 3095, 3364, 4205, 4952, 6190, 6728, 8410, 12380, 16820, 17951, 24760, 33640, 35902, 71804, 89755, 143608, 179510, 359020, 520579, 718040, 1041158, 2082316, 2602895, 4164632, 5205790, 10411580, 20823160]

約数ペア:

[(1, 20823160), (2, 10411580), (4, 5205790), (5, 4164632), (8, 2602895), (10, 2082316), (20, 1041158), (29, 718040), (40, 520579), (58, 359020), (116, 179510), (145, 143608), (232, 89755), (290, 71804), (580, 35902), (619, 33640), (841, 24760), (1160, 17951), (1238, 16820), (1682, 12380), (2476, 8410), (3095, 6728), (3364, 6190), (4205, 4952)]