66739720

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{31481}}^1$

素因数の和:31545

約数の個数: 32

約数和(自身を含む): 153002520

約数和(自身を除く): 86262800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 31481, 62962, 125924, 157405, 251848, 314810, 629620, 1259240, 1668493, 3336986, 6673972, 8342465, 13347944, 16684930, 33369860, 66739720]

約数ペア:

[(1, 66739720), (2, 33369860), (4, 16684930), (5, 13347944), (8, 8342465), (10, 6673972), (20, 3336986), (40, 1668493), (53, 1259240), (106, 629620), (212, 314810), (265, 251848), (424, 157405), (530, 125924), (1060, 62962), (2120, 31481)]