20180867860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{787}}^1\times {\mathrm{67481}}^1$

素因数の和:68296

約数の個数: 48

約数和(自身を含む): 44667685440

約数和(自身を除く): 24486817580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 787, 1574, 3148, 3935, 7870, 14953, 15740, 29906, 59812, 67481, 74765, 134962, 149530, 269924, 299060, 337405, 674810, 1282139, 1349620, 2564278, 5128556, 6410695, 12821390, 25642780, 53107547, 106215094, 212430188, 265537735, 531075470, 1009043393, 1062150940, 2018086786, 4036173572, 5045216965, 10090433930, 20180867860]

約数ペア:

[(1, 20180867860), (2, 10090433930), (4, 5045216965), (5, 4036173572), (10, 2018086786), (19, 1062150940), (20, 1009043393), (38, 531075470), (76, 265537735), (95, 212430188), (190, 106215094), (380, 53107547), (787, 25642780), (1574, 12821390), (3148, 6410695), (3935, 5128556), (7870, 2564278), (14953, 1349620), (15740, 1282139), (29906, 674810), (59812, 337405), (67481, 299060), (74765, 269924), (134962, 149530)]