66681280

素因数分解:

$2^6\times 5^1\times {\mathrm{208379}}^1$

素因数の和:208396

約数の個数: 28

約数和(自身を含む): 158785560

約数和(自身を除く): 92104280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 208379, 416758, 833516, 1041895, 1667032, 2083790, 3334064, 4167580, 6668128, 8335160, 13336256, 16670320, 33340640, 66681280]

約数ペア:

[(1, 66681280), (2, 33340640), (4, 16670320), (5, 13336256), (8, 8335160), (10, 6668128), (16, 4167580), (20, 3334064), (32, 2083790), (40, 1667032), (64, 1041895), (80, 833516), (160, 416758), (320, 208379)]