207949640

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{33113}}^1$

素因数の和:33281

約数の個数: 32

約数和(自身を含む): 470881080

約数和(自身を除く): 262931440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 33113, 66226, 132452, 165565, 264904, 331130, 662260, 1324520, 5198741, 10397482, 20794964, 25993705, 41589928, 51987410, 103974820, 207949640]

約数ペア:

[(1, 207949640), (2, 103974820), (4, 51987410), (5, 41589928), (8, 25993705), (10, 20794964), (20, 10397482), (40, 5198741), (157, 1324520), (314, 662260), (628, 331130), (785, 264904), (1256, 165565), (1570, 132452), (3140, 66226), (6280, 33113)]