66565640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{27281}}^1$

素因数の和:27353

約数の個数: 32

約数和(自身を含む): 152233560

約数和(自身を除く): 85667920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 27281, 54562, 109124, 136405, 218248, 272810, 545620, 1091240, 1664141, 3328282, 6656564, 8320705, 13313128, 16641410, 33282820, 66565640]

約数ペア:

[(1, 66565640), (2, 33282820), (4, 16641410), (5, 13313128), (8, 8320705), (10, 6656564), (20, 3328282), (40, 1664141), (61, 1091240), (122, 545620), (244, 272810), (305, 218248), (488, 136405), (610, 109124), (1220, 54562), (2440, 27281)]