21136465360

素因数分解:

$2^4\times 5^1\times {\mathrm{1409}}^1\times {\mathrm{187513}}^1$

素因数の和:188935

約数の個数: 40

約数和(自身を含む): 49177421640

約数和(自身を除く): 28040956280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1409, 2818, 5636, 7045, 11272, 14090, 22544, 28180, 56360, 112720, 187513, 375026, 750052, 937565, 1500104, 1875130, 3000208, 3750260, 7500520, 15001040, 264205817, 528411634, 1056823268, 1321029085, 2113646536, 2642058170, 4227293072, 5284116340, 10568232680, 21136465360]

約数ペア:

[(1, 21136465360), (2, 10568232680), (4, 5284116340), (5, 4227293072), (8, 2642058170), (10, 2113646536), (16, 1321029085), (20, 1056823268), (40, 528411634), (80, 264205817), (1409, 15001040), (2818, 7500520), (5636, 3750260), (7045, 3000208), (11272, 1875130), (14090, 1500104), (22544, 937565), (28180, 750052), (56360, 375026), (112720, 187513)]