13268620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{21401}}^1$

素因数の和:21441

約数の個数: 24

約数和(自身を含む): 28764288

約数和(自身を除く): 15495668

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 21401, 42802, 85604, 107005, 214010, 428020, 663431, 1326862, 2653724, 3317155, 6634310, 13268620]

約数ペア:

[(1, 13268620), (2, 6634310), (4, 3317155), (5, 2653724), (10, 1326862), (20, 663431), (31, 428020), (62, 214010), (124, 107005), (155, 85604), (310, 42802), (620, 21401)]