21090969215

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{487}}^1\times {\mathrm{1787}}^1$

素因数の和:2447

約数の個数: 32

約数和(自身を含む): 26260084224

約数和(自身を除く): 5169115009

約数列:

[1, 5, 37, 131, 185, 487, 655, 1787, 2435, 4847, 8935, 18019, 24235, 63797, 66119, 90095, 234097, 318985, 330595, 870269, 1170485, 2360489, 4351345, 8661589, 11802445, 32199953, 43307945, 114005239, 160999765, 570026195, 4218193843, 21090969215]

約数ペア:

[(1, 21090969215), (5, 4218193843), (37, 570026195), (131, 160999765), (185, 114005239), (487, 43307945), (655, 32199953), (1787, 11802445), (2435, 8661589), (4847, 4351345), (8935, 2360489), (18019, 1170485), (24235, 870269), (63797, 330595), (66119, 318985), (90095, 234097)]