20121309999

素因数分解:

$3^2\times 7^1\times {\mathrm{613}}^1\times {\mathrm{521021}}^1$

素因数の和:521647

約数の個数: 24

約数和(自身を含む): 33270380832

約数和(自身を除く): 13149070833

約数列:

[1, 3, 7, 9, 21, 63, 613, 1839, 4291, 5517, 12873, 38619, 521021, 1563063, 3647147, 4689189, 10941441, 32824323, 319385873, 958157619, 2235701111, 2874472857, 6707103333, 20121309999]

約数ペア:

[(1, 20121309999), (3, 6707103333), (7, 2874472857), (9, 2235701111), (21, 958157619), (63, 319385873), (613, 32824323), (1839, 10941441), (4291, 4689189), (5517, 3647147), (12873, 1563063), (38619, 521021)]