16280240

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1867}}^1$

素因数の和:1989

約数の個数: 40

約数和(自身を含む): 38219280

約数和(自身を除く): 21939040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 1867, 2180, 3734, 4360, 7468, 8720, 9335, 14936, 18670, 29872, 37340, 74680, 149360, 203503, 407006, 814012, 1017515, 1628024, 2035030, 3256048, 4070060, 8140120, 16280240]

約数ペア:

[(1, 16280240), (2, 8140120), (4, 4070060), (5, 3256048), (8, 2035030), (10, 1628024), (16, 1017515), (20, 814012), (40, 407006), (80, 203503), (109, 149360), (218, 74680), (436, 37340), (545, 29872), (872, 18670), (1090, 14936), (1744, 9335), (1867, 8720), (2180, 7468), (3734, 4360)]