7781270

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1249}}^1$

素因数の和:1352

約数の個数: 32

約数和(自身を含む): 16200000

約数和(自身を除く): 8418730

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 89, 178, 445, 623, 890, 1246, 1249, 2498, 3115, 6230, 6245, 8743, 12490, 17486, 43715, 87430, 111161, 222322, 555805, 778127, 1111610, 1556254, 3890635, 7781270]

約数ペア:

[(1, 7781270), (2, 3890635), (5, 1556254), (7, 1111610), (10, 778127), (14, 555805), (35, 222322), (70, 111161), (89, 87430), (178, 43715), (445, 17486), (623, 12490), (890, 8743), (1246, 6245), (1249, 6230), (2498, 3115)]