10281640

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{641}}^1$

素因数の和:1053

約数の個数: 32

約数和(自身を含む): 23227560

約数和(自身を除く): 12945920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 641, 802, 1282, 1604, 2005, 2564, 3205, 3208, 4010, 5128, 6410, 8020, 12820, 16040, 25640, 257041, 514082, 1028164, 1285205, 2056328, 2570410, 5140820, 10281640]

約数ペア:

[(1, 10281640), (2, 5140820), (4, 2570410), (5, 2056328), (8, 1285205), (10, 1028164), (20, 514082), (40, 257041), (401, 25640), (641, 16040), (802, 12820), (1282, 8020), (1604, 6410), (2005, 5128), (2564, 4010), (3205, 3208)]