20687643

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{8807}}^1$

素因数の和:8848

約数の個数: 20

約数和(自身を含む): 31973040

約数和(自身を除く): 11285397

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 8807, 26421, 79263, 237789, 255403, 713367, 766209, 2298627, 6895881, 20687643]

約数ペア:

[(1, 20687643), (3, 6895881), (9, 2298627), (27, 766209), (29, 713367), (81, 255403), (87, 237789), (261, 79263), (783, 26421), (2349, 8807)]