21037370

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{421}}^1$

素因数の和:710

約数の個数: 32

約数和(自身を含む): 40106880

約数和(自身を除く): 19069510

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 263, 421, 526, 842, 1315, 2105, 2630, 4210, 4997, 7999, 9994, 15998, 24985, 39995, 49970, 79990, 110723, 221446, 553615, 1107230, 2103737, 4207474, 10518685, 21037370]

約数ペア:

[(1, 21037370), (2, 10518685), (5, 4207474), (10, 2103737), (19, 1107230), (38, 553615), (95, 221446), (190, 110723), (263, 79990), (421, 49970), (526, 39995), (842, 24985), (1315, 15998), (2105, 9994), (2630, 7999), (4210, 4997)]