21990339080

素因数分解:

$2^3\times 5^1\times {\mathrm{4591}}^1\times {\mathrm{119747}}^1$

素因数の和:124349

約数の個数: 32

約数和(自身を含む): 49489453440

約数和(自身を除く): 27499114360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4591, 9182, 18364, 22955, 36728, 45910, 91820, 119747, 183640, 239494, 478988, 598735, 957976, 1197470, 2394940, 4789880, 549758477, 1099516954, 2199033908, 2748792385, 4398067816, 5497584770, 10995169540, 21990339080]

約数ペア:

[(1, 21990339080), (2, 10995169540), (4, 5497584770), (5, 4398067816), (8, 2748792385), (10, 2199033908), (20, 1099516954), (40, 549758477), (4591, 4789880), (9182, 2394940), (18364, 1197470), (22955, 957976), (36728, 598735), (45910, 478988), (91820, 239494), (119747, 183640)]