20515117

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{2113}}^1$

素因数の和:2212

約数の個数: 16

約数和(自身を含む): 25029760

約数和(自身を除く): 4514643

約数列:

[1, 7, 19, 73, 133, 511, 1387, 2113, 9709, 14791, 40147, 154249, 281029, 1079743, 2930731, 20515117]

約数ペア:

[(1, 20515117), (7, 2930731), (19, 1079743), (73, 281029), (133, 154249), (511, 40147), (1387, 14791), (2113, 9709)]