66431480

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{40507}}^1$

素因数の和:40559

約数の個数: 32

約数和(自身を含む): 153120240

約数和(自身を除く): 86688760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 40507, 81014, 162028, 202535, 324056, 405070, 810140, 1620280, 1660787, 3321574, 6643148, 8303935, 13286296, 16607870, 33215740, 66431480]

約数ペア:

[(1, 66431480), (2, 33215740), (4, 16607870), (5, 13286296), (8, 8303935), (10, 6643148), (20, 3321574), (40, 1660787), (41, 1620280), (82, 810140), (164, 405070), (205, 324056), (328, 202535), (410, 162028), (820, 81014), (1640, 40507)]