20171805680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{451069}}^1$

素因数の和:451138

約数の個数: 80

約数和(自身を含む): 51681796320

約数和(自身を除く): 31509990640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 520, 559, 688, 860, 1040, 1118, 1720, 2236, 2795, 3440, 4472, 5590, 8944, 11180, 22360, 44720, 451069, 902138, 1804276, 2255345, 3608552, 4510690, 5863897, 7217104, 9021380, 11727794, 18042760, 19395967, 23455588, 29319485, 36085520, 38791934, 46911176, 58638970, 77583868, 93822352, 96979835, 117277940, 155167736, 193959670, 234555880, 252147571, 310335472, 387919340, 469111760, 504295142, 775838680, 1008590284, 1260737855, 1551677360, 2017180568, 2521475710, 4034361136, 5042951420, 10085902840, 20171805680]

約数ペア:

[(1, 20171805680), (2, 10085902840), (4, 5042951420), (5, 4034361136), (8, 2521475710), (10, 2017180568), (13, 1551677360), (16, 1260737855), (20, 1008590284), (26, 775838680), (40, 504295142), (43, 469111760), (52, 387919340), (65, 310335472), (80, 252147571), (86, 234555880), (104, 193959670), (130, 155167736), (172, 117277940), (208, 96979835), (215, 93822352), (260, 77583868), (344, 58638970), (430, 46911176), (520, 38791934), (559, 36085520), (688, 29319485), (860, 23455588), (1040, 19395967), (1118, 18042760), (1720, 11727794), (2236, 9021380), (2795, 7217104), (3440, 5863897), (4472, 4510690), (5590, 3608552), (8944, 2255345), (11180, 1804276), (22360, 902138), (44720, 451069)]