21000814935

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1915259}}^1$

素因数の和:1915327

約数の個数: 32

約数和(自身を含む): 36405262080

約数和(自身を除く): 15404447145

約数列:

[1, 3, 5, 15, 17, 43, 51, 85, 129, 215, 255, 645, 731, 2193, 3655, 10965, 1915259, 5745777, 9576295, 28728885, 32559403, 82356137, 97678209, 162797015, 247068411, 411780685, 488391045, 1235342055, 1400054329, 4200162987, 7000271645, 21000814935]

約数ペア:

[(1, 21000814935), (3, 7000271645), (5, 4200162987), (15, 1400054329), (17, 1235342055), (43, 488391045), (51, 411780685), (85, 247068411), (129, 162797015), (215, 97678209), (255, 82356137), (645, 32559403), (731, 28728885), (2193, 9576295), (3655, 5745777), (10965, 1915259)]