65742680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{40087}}^1$

素因数の和:40139

約数の個数: 32

約数和(自身を含む): 151532640

約数和(自身を除く): 85789960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 40087, 80174, 160348, 200435, 320696, 400870, 801740, 1603480, 1643567, 3287134, 6574268, 8217835, 13148536, 16435670, 32871340, 65742680]

約数ペア:

[(1, 65742680), (2, 32871340), (4, 16435670), (5, 13148536), (8, 8217835), (10, 6574268), (20, 3287134), (40, 1643567), (41, 1603480), (82, 801740), (164, 400870), (205, 320696), (328, 200435), (410, 160348), (820, 80174), (1640, 40087)]