20071205

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1409}}^1$

素因数の和:1469

約数の個数: 32

約数和(自身を含む): 30862080

約数和(自身を除く): 10790875

約数列:

[1, 5, 7, 11, 35, 37, 55, 77, 185, 259, 385, 407, 1295, 1409, 2035, 2849, 7045, 9863, 14245, 15499, 49315, 52133, 77495, 108493, 260665, 364931, 542465, 573463, 1824655, 2867315, 4014241, 20071205]

約数ペア:

[(1, 20071205), (5, 4014241), (7, 2867315), (11, 1824655), (35, 573463), (37, 542465), (55, 364931), (77, 260665), (185, 108493), (259, 77495), (385, 52133), (407, 49315), (1295, 15499), (1409, 14245), (2035, 9863), (2849, 7045)]