21095305

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{349}}^1$

素因数の和:529

約数の個数: 32

約数和(自身を含む): 31852800

約数和(自身を除く): 10757495

約数列:

[1, 5, 7, 11, 35, 55, 77, 157, 349, 385, 785, 1099, 1727, 1745, 2443, 3839, 5495, 8635, 12089, 12215, 19195, 26873, 54793, 60445, 134365, 273965, 383551, 602723, 1917755, 3013615, 4219061, 21095305]

約数ペア:

[(1, 21095305), (5, 4219061), (7, 3013615), (11, 1917755), (35, 602723), (55, 383551), (77, 273965), (157, 134365), (349, 60445), (385, 54793), (785, 26873), (1099, 19195), (1727, 12215), (1745, 12089), (2443, 8635), (3839, 5495)]