20608150

素因数分解:

$2^1\times 5^2\times {\mathrm{641}}^1\times {\mathrm{643}}^1$

素因数の和:1296

約数の個数: 24

約数和(自身を含む): 38450664

約数和(自身を除く): 17842514

約数列:

[1, 2, 5, 10, 25, 50, 641, 643, 1282, 1286, 3205, 3215, 6410, 6430, 16025, 16075, 32050, 32150, 412163, 824326, 2060815, 4121630, 10304075, 20608150]

約数ペア:

[(1, 20608150), (2, 10304075), (5, 4121630), (10, 2060815), (25, 824326), (50, 412163), (641, 32150), (643, 32050), (1282, 16075), (1286, 16025), (3205, 6430), (3215, 6410)]