16227920

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1861}}^1$

素因数の和:1983

約数の個数: 40

約数和(自身を含む): 38096520

約数和(自身を除く): 21868600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 1861, 2180, 3722, 4360, 7444, 8720, 9305, 14888, 18610, 29776, 37220, 74440, 148880, 202849, 405698, 811396, 1014245, 1622792, 2028490, 3245584, 4056980, 8113960, 16227920]

約数ペア:

[(1, 16227920), (2, 8113960), (4, 4056980), (5, 3245584), (8, 2028490), (10, 1622792), (16, 1014245), (20, 811396), (40, 405698), (80, 202849), (109, 148880), (218, 74440), (436, 37220), (545, 29776), (872, 18610), (1090, 14888), (1744, 9305), (1861, 8720), (2180, 7444), (3722, 4360)]