18411740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 40212480

約数和(自身を除く): 21800740

約数列:

[1, 2, 4, 5, 10, 20, 43, 79, 86, 158, 172, 215, 271, 316, 395, 430, 542, 790, 860, 1084, 1355, 1580, 2710, 3397, 5420, 6794, 11653, 13588, 16985, 21409, 23306, 33970, 42818, 46612, 58265, 67940, 85636, 107045, 116530, 214090, 233060, 428180, 920587, 1841174, 3682348, 4602935, 9205870, 18411740]

約数ペア:

[(1, 18411740), (2, 9205870), (4, 4602935), (5, 3682348), (10, 1841174), (20, 920587), (43, 428180), (79, 233060), (86, 214090), (158, 116530), (172, 107045), (215, 85636), (271, 67940), (316, 58265), (395, 46612), (430, 42818), (542, 33970), (790, 23306), (860, 21409), (1084, 16985), (1355, 13588), (1580, 11653), (2710, 6794), (3397, 5420)]