20081215

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1213}}^1$

素因数の和:1279

約数の個数: 32

約数和(自身を含む): 30767616

約数和(自身を除く): 10686401

約数列:

[1, 5, 7, 11, 35, 43, 55, 77, 215, 301, 385, 473, 1213, 1505, 2365, 3311, 6065, 8491, 13343, 16555, 42455, 52159, 66715, 93401, 260795, 365113, 467005, 573749, 1825565, 2868745, 4016243, 20081215]

約数ペア:

[(1, 20081215), (5, 4016243), (7, 2868745), (11, 1825565), (35, 573749), (43, 467005), (55, 365113), (77, 260795), (215, 93401), (301, 66715), (385, 52159), (473, 42455), (1213, 16555), (1505, 13343), (2365, 8491), (3311, 6065)]