21597080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17417}}^1$

素因数の和:17459

約数の個数: 32

約数和(自身を含む): 50163840

約数和(自身を除く): 28566760

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17417, 34834, 69668, 87085, 139336, 174170, 348340, 539927, 696680, 1079854, 2159708, 2699635, 4319416, 5399270, 10798540, 21597080]

約数ペア:

[(1, 21597080), (2, 10798540), (4, 5399270), (5, 4319416), (8, 2699635), (10, 2159708), (20, 1079854), (31, 696680), (40, 539927), (62, 348340), (124, 174170), (155, 139336), (248, 87085), (310, 69668), (620, 34834), (1240, 17417)]