20397754

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:454

約数の個数: 32

約数和(自身を含む): 35038080

約数和(自身を除く): 14640326

約数列:

[1, 2, 13, 19, 26, 38, 157, 247, 263, 314, 494, 526, 2041, 2983, 3419, 4082, 4997, 5966, 6838, 9994, 38779, 41291, 64961, 77558, 82582, 129922, 536783, 784529, 1073566, 1569058, 10198877, 20397754]

約数ペア:

[(1, 20397754), (2, 10198877), (13, 1569058), (19, 1073566), (26, 784529), (38, 536783), (157, 129922), (247, 82582), (263, 77558), (314, 64961), (494, 41291), (526, 38779), (2041, 9994), (2983, 6838), (3419, 5966), (4082, 4997)]