21000455245

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{529579}}^1$

素因数の和:529705

約数の個数: 32

約数和(自身を含む): 31723960320

約数和(自身を除く): 10723505075

約数列:

[1, 5, 7, 11, 35, 55, 77, 103, 385, 515, 721, 1133, 3605, 5665, 7931, 39655, 529579, 2647895, 3707053, 5825369, 18535265, 29126845, 40777583, 54546637, 203887915, 272733185, 381826459, 600013007, 1909132295, 3000065035, 4200091049, 21000455245]

約数ペア:

[(1, 21000455245), (5, 4200091049), (7, 3000065035), (11, 1909132295), (35, 600013007), (55, 381826459), (77, 272733185), (103, 203887915), (385, 54546637), (515, 40777583), (721, 29126845), (1133, 18535265), (3605, 5825369), (5665, 3707053), (7931, 2647895), (39655, 529579)]