20409010

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{443}}^1$

素因数の和:738

約数の個数: 32

約数和(自身を含む): 39128832

約数和(自身を除く): 18719822

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 271, 443, 542, 886, 1355, 2215, 2710, 4430, 4607, 7531, 9214, 15062, 23035, 37655, 46070, 75310, 120053, 240106, 600265, 1200530, 2040901, 4081802, 10204505, 20409010]

約数ペア:

[(1, 20409010), (2, 10204505), (5, 4081802), (10, 2040901), (17, 1200530), (34, 600265), (85, 240106), (170, 120053), (271, 75310), (443, 46070), (542, 37655), (886, 23035), (1355, 15062), (2215, 9214), (2710, 7531), (4430, 4607)]