64787420

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1\times {\mathrm{263}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 139043520

約数和(自身を除く): 74256100

約数列:

[1, 2, 4, 5, 10, 20, 109, 113, 218, 226, 263, 436, 452, 526, 545, 565, 1052, 1090, 1130, 1315, 2180, 2260, 2630, 5260, 12317, 24634, 28667, 29719, 49268, 57334, 59438, 61585, 114668, 118876, 123170, 143335, 148595, 246340, 286670, 297190, 573340, 594380, 3239371, 6478742, 12957484, 16196855, 32393710, 64787420]

約数ペア:

[(1, 64787420), (2, 32393710), (4, 16196855), (5, 12957484), (10, 6478742), (20, 3239371), (109, 594380), (113, 573340), (218, 297190), (226, 286670), (263, 246340), (436, 148595), (452, 143335), (526, 123170), (545, 118876), (565, 114668), (1052, 61585), (1090, 59438), (1130, 57334), (1315, 49268), (2180, 29719), (2260, 28667), (2630, 24634), (5260, 12317)]