25678460

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{2003}}^1$

素因数の和:2653

約数の個数: 24

約数和(自身を含む): 54035856

約数和(自身を除く): 28357396

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2003, 2564, 3205, 4006, 6410, 8012, 10015, 12820, 20030, 40060, 1283923, 2567846, 5135692, 6419615, 12839230, 25678460]

約数ペア:

[(1, 25678460), (2, 12839230), (4, 6419615), (5, 5135692), (10, 2567846), (20, 1283923), (641, 40060), (1282, 20030), (2003, 12820), (2564, 10015), (3205, 8012), (4006, 6410)]