21090310

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1951}}^1$

素因数の和:2028

約数の個数: 32

約数和(自身を含む): 40476672

約数和(自身を除く): 19386362

約数列:

[1, 2, 5, 10, 23, 46, 47, 94, 115, 230, 235, 470, 1081, 1951, 2162, 3902, 5405, 9755, 10810, 19510, 44873, 89746, 91697, 183394, 224365, 448730, 458485, 916970, 2109031, 4218062, 10545155, 21090310]

約数ペア:

[(1, 21090310), (2, 10545155), (5, 4218062), (10, 2109031), (23, 916970), (46, 458485), (47, 448730), (94, 224365), (115, 183394), (230, 91697), (235, 89746), (470, 44873), (1081, 19510), (1951, 10810), (2162, 9755), (3902, 5405)]