20304907

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{683}}^1$

素因数の和:858

約数の個数: 16

約数和(自身を含む): 24164352

約数和(自身を除く): 3859445

約数列:

[1, 7, 31, 137, 217, 683, 959, 4247, 4781, 21173, 29729, 93571, 148211, 654997, 2900701, 20304907]

約数ペア:

[(1, 20304907), (7, 2900701), (31, 654997), (137, 148211), (217, 93571), (683, 29729), (959, 21173), (4247, 4781)]