28217721

素因数分解:

$3^1\times 7^1\times {\mathrm{659}}^1\times {\mathrm{2039}}^1$

素因数の和:2708

約数の個数: 16

約数和(自身を含む): 43084800

約数和(自身を除く): 14867079

約数列:

[1, 3, 7, 21, 659, 1977, 2039, 4613, 6117, 13839, 14273, 42819, 1343701, 4031103, 9405907, 28217721]

約数ペア:

[(1, 28217721), (3, 9405907), (7, 4031103), (21, 1343701), (659, 42819), (1977, 14273), (2039, 13839), (4613, 6117)]