21487690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{7487}}^1$

素因数の和:7542

約数の個数: 32

約数和(自身を含む): 45287424

約数和(自身を除く): 23799734

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 70, 82, 205, 287, 410, 574, 1435, 2870, 7487, 14974, 37435, 52409, 74870, 104818, 262045, 306967, 524090, 613934, 1534835, 2148769, 3069670, 4297538, 10743845, 21487690]

約数ペア:

[(1, 21487690), (2, 10743845), (5, 4297538), (7, 3069670), (10, 2148769), (14, 1534835), (35, 613934), (41, 524090), (70, 306967), (82, 262045), (205, 104818), (287, 74870), (410, 52409), (574, 37435), (1435, 14974), (2870, 7487)]