20638980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{114661}}^1$

素因数の和:114676

約数の個数: 36

約数和(自身を含む): 62605452

約数和(自身を除く): 41966472

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 114661, 229322, 343983, 458644, 573305, 687966, 1031949, 1146610, 1375932, 1719915, 2063898, 2293220, 3439830, 4127796, 5159745, 6879660, 10319490, 20638980]

約数ペア:

[(1, 20638980), (2, 10319490), (3, 6879660), (4, 5159745), (5, 4127796), (6, 3439830), (9, 2293220), (10, 2063898), (12, 1719915), (15, 1375932), (18, 1146610), (20, 1031949), (30, 687966), (36, 573305), (45, 458644), (60, 343983), (90, 229322), (180, 114661)]