28636780

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{10301}}^1$

素因数の和:10449

約数の個数: 24

約数和(自身を含む): 60575760

約数和(自身を除く): 31938980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 10301, 20602, 41204, 51505, 103010, 206020, 1431839, 2863678, 5727356, 7159195, 14318390, 28636780]

約数ペア:

[(1, 28636780), (2, 14318390), (4, 7159195), (5, 5727356), (10, 2863678), (20, 1431839), (139, 206020), (278, 103010), (556, 51505), (695, 41204), (1390, 20602), (2780, 10301)]