20626151

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:303

約数の個数: 32

約数和(自身を含む): 27417600

約数和(自身を除く): 6791449

約数列:

[1, 7, 13, 17, 67, 91, 119, 199, 221, 469, 871, 1139, 1393, 1547, 2587, 3383, 6097, 7973, 13333, 14807, 18109, 23681, 43979, 93331, 103649, 173329, 226661, 307853, 1213303, 1586627, 2946593, 20626151]

約数ペア:

[(1, 20626151), (7, 2946593), (13, 1586627), (17, 1213303), (67, 307853), (91, 226661), (119, 173329), (199, 103649), (221, 93331), (469, 43979), (871, 23681), (1139, 18109), (1393, 14807), (1547, 13333), (2587, 7973), (3383, 6097)]