20453090

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:184

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 23610910

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 67, 70, 89, 98, 134, 178, 245, 335, 343, 445, 469, 490, 623, 670, 686, 890, 938, 1246, 1715, 2345, 3115, 3283, 3430, 4361, 4690, 5963, 6230, 6566, 8722, 11926, 16415, 21805, 22981, 29815, 30527, 32830, 41741, 43610, 45962, 59630, 61054, 83482, 114905, 152635, 208705, 229810, 292187, 305270, 417410, 584374, 1460935, 2045309, 2921870, 4090618, 10226545, 20453090]

約数ペア:

[(1, 20453090), (2, 10226545), (5, 4090618), (7, 2921870), (10, 2045309), (14, 1460935), (35, 584374), (49, 417410), (67, 305270), (70, 292187), (89, 229810), (98, 208705), (134, 152635), (178, 114905), (245, 83482), (335, 61054), (343, 59630), (445, 45962), (469, 43610), (490, 41741), (623, 32830), (670, 30527), (686, 29815), (890, 22981), (938, 21805), (1246, 16415), (1715, 11926), (2345, 8722), (3115, 6566), (3283, 6230), (3430, 5963), (4361, 4690)]