21103729905

素因数分解:

$3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{10121693}}^1$

素因数の和:10121840

約数の個数: 16

約数和(自身を含む): 34008891840

約数和(自身を除く): 12905161935

約数列:

[1, 3, 5, 15, 139, 417, 695, 2085, 10121693, 30365079, 50608465, 151825395, 1406915327, 4220745981, 7034576635, 21103729905]

約数ペア:

[(1, 21103729905), (3, 7034576635), (5, 4220745981), (15, 1406915327), (139, 151825395), (417, 50608465), (695, 30365079), (2085, 10121693)]