65554520

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{4007}}^1$

素因数の和:4427

約数の個数: 32

約数和(自身を含む): 147895200

約数和(自身を除く): 82340680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4007, 4090, 8014, 8180, 16028, 16360, 20035, 32056, 40070, 80140, 160280, 1638863, 3277726, 6555452, 8194315, 13110904, 16388630, 32777260, 65554520]

約数ペア:

[(1, 65554520), (2, 32777260), (4, 16388630), (5, 13110904), (8, 8194315), (10, 6555452), (20, 3277726), (40, 1638863), (409, 160280), (818, 80140), (1636, 40070), (2045, 32056), (3272, 20035), (4007, 16360), (4090, 16028), (8014, 8180)]