20989417

素因数分解:

${\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:336

約数の個数: 16

約数和(自身を含む): 22579200

約数和(自身を除く): 1589783

約数列:

[1, 29, 41, 127, 139, 1189, 3683, 4031, 5207, 5699, 17653, 151003, 165271, 511937, 723773, 20989417]

約数ペア:

[(1, 20989417), (29, 723773), (41, 511937), (127, 165271), (139, 151003), (1189, 17653), (3683, 5699), (4031, 5207)]