778899340

素因数分解:

$2^2\times 5^1\times {\mathrm{541}}^1\times {\mathrm{71987}}^1$

素因数の和:72537

約数の個数: 24

約数和(自身を含む): 1638734832

約数和(自身を除く): 859835492

約数列:

[1, 2, 4, 5, 10, 20, 541, 1082, 2164, 2705, 5410, 10820, 71987, 143974, 287948, 359935, 719870, 1439740, 38944967, 77889934, 155779868, 194724835, 389449670, 778899340]

約数ペア:

[(1, 778899340), (2, 389449670), (4, 194724835), (5, 155779868), (10, 77889934), (20, 38944967), (541, 1439740), (1082, 719870), (2164, 359935), (2705, 287948), (5410, 143974), (10820, 71987)]