21668030

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{647}}^1$

素因数の和:868

約数の個数: 32

約数和(自身を含む): 41570496

約数和(自身を除く): 19902466

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 197, 394, 647, 985, 1294, 1970, 3235, 3349, 6470, 6698, 10999, 16745, 21998, 33490, 54995, 109990, 127459, 254918, 637295, 1274590, 2166803, 4333606, 10834015, 21668030]

約数ペア:

[(1, 21668030), (2, 10834015), (5, 4333606), (10, 2166803), (17, 1274590), (34, 637295), (85, 254918), (170, 127459), (197, 109990), (394, 54995), (647, 33490), (985, 21998), (1294, 16745), (1970, 10999), (3235, 6698), (3349, 6470)]