213710680

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{13063}}^1$

素因数の和:13483

約数の個数: 32

約数和(自身を含む): 482061600

約数和(自身を除く): 268350920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 8180, 13063, 16360, 26126, 52252, 65315, 104504, 130630, 261260, 522520, 5342767, 10685534, 21371068, 26713835, 42742136, 53427670, 106855340, 213710680]

約数ペア:

[(1, 213710680), (2, 106855340), (4, 53427670), (5, 42742136), (8, 26713835), (10, 21371068), (20, 10685534), (40, 5342767), (409, 522520), (818, 261260), (1636, 130630), (2045, 104504), (3272, 65315), (4090, 52252), (8180, 26126), (13063, 16360)]