20108694520

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1194103}}^1$

素因数の和:1194535

約数の個数: 32

約数和(自身を含む): 45352069920

約数和(自身を除く): 25243375400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 8420, 16840, 1194103, 2388206, 4776412, 5970515, 9552824, 11941030, 23882060, 47764120, 502717363, 1005434726, 2010869452, 2513586815, 4021738904, 5027173630, 10054347260, 20108694520]

約数ペア:

[(1, 20108694520), (2, 10054347260), (4, 5027173630), (5, 4021738904), (8, 2513586815), (10, 2010869452), (20, 1005434726), (40, 502717363), (421, 47764120), (842, 23882060), (1684, 11941030), (2105, 9552824), (3368, 5970515), (4210, 4776412), (8420, 2388206), (16840, 1194103)]