66816520

素因数分解:

$2^3\times 5^1\times {\mathrm{1670413}}^1$

素因数の和:1670424

約数の個数: 16

約数和(自身を含む): 150337260

約数和(自身を除く): 83520740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1670413, 3340826, 6681652, 8352065, 13363304, 16704130, 33408260, 66816520]

約数ペア:

[(1, 66816520), (2, 33408260), (4, 16704130), (5, 13363304), (8, 8352065), (10, 6681652), (20, 3340826), (40, 1670413)]