20185963640

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{971}}^1\times {\mathrm{3739}}^1$

素因数の和:4860

約数の個数: 64

約数和(自身を含む): 45804528000

約数和(自身を除く): 25618564360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 971, 1112, 1390, 1942, 2780, 3739, 3884, 4855, 5560, 7478, 7768, 9710, 14956, 18695, 19420, 29912, 37390, 38840, 74780, 134969, 149560, 269938, 519721, 539876, 674845, 1039442, 1079752, 1349690, 2078884, 2598605, 2699380, 3630569, 4157768, 5197210, 5398760, 7261138, 10394420, 14522276, 18152845, 20788840, 29044552, 36305690, 72611380, 145222760, 504649091, 1009298182, 2018596364, 2523245455, 4037192728, 5046490910, 10092981820, 20185963640]

約数ペア:

[(1, 20185963640), (2, 10092981820), (4, 5046490910), (5, 4037192728), (8, 2523245455), (10, 2018596364), (20, 1009298182), (40, 504649091), (139, 145222760), (278, 72611380), (556, 36305690), (695, 29044552), (971, 20788840), (1112, 18152845), (1390, 14522276), (1942, 10394420), (2780, 7261138), (3739, 5398760), (3884, 5197210), (4855, 4157768), (5560, 3630569), (7478, 2699380), (7768, 2598605), (9710, 2078884), (14956, 1349690), (18695, 1079752), (19420, 1039442), (29912, 674845), (37390, 539876), (38840, 519721), (74780, 269938), (134969, 149560)]