99990520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{357109}}^1$

素因数の和:357127

約数の個数: 32

約数和(自身を含む): 257119200

約数和(自身を除く): 157128680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 357109, 714218, 1428436, 1785545, 2499763, 2856872, 3571090, 4999526, 7142180, 9999052, 12498815, 14284360, 19998104, 24997630, 49995260, 99990520]

約数ペア:

[(1, 99990520), (2, 49995260), (4, 24997630), (5, 19998104), (7, 14284360), (8, 12498815), (10, 9999052), (14, 7142180), (20, 4999526), (28, 3571090), (35, 2856872), (40, 2499763), (56, 1785545), (70, 1428436), (140, 714218), (280, 357109)]