6640280

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1523}}^1$

素因数の和:1643

約数の個数: 32

約数和(自身を含む): 15087600

約数和(自身を除く): 8447320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 1523, 2180, 3046, 4360, 6092, 7615, 12184, 15230, 30460, 60920, 166007, 332014, 664028, 830035, 1328056, 1660070, 3320140, 6640280]

約数ペア:

[(1, 6640280), (2, 3320140), (4, 1660070), (5, 1328056), (8, 830035), (10, 664028), (20, 332014), (40, 166007), (109, 60920), (218, 30460), (436, 15230), (545, 12184), (872, 7615), (1090, 6092), (1523, 4360), (2180, 3046)]