16818160

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4889}}^1$

素因数の和:4945

約数の個数: 40

約数和(自身を含む): 40019760

約数和(自身を除く): 23201600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 4889, 9778, 19556, 24445, 39112, 48890, 78224, 97780, 195560, 210227, 391120, 420454, 840908, 1051135, 1681816, 2102270, 3363632, 4204540, 8409080, 16818160]

約数ペア:

[(1, 16818160), (2, 8409080), (4, 4204540), (5, 3363632), (8, 2102270), (10, 1681816), (16, 1051135), (20, 840908), (40, 420454), (43, 391120), (80, 210227), (86, 195560), (172, 97780), (215, 78224), (344, 48890), (430, 39112), (688, 24445), (860, 19556), (1720, 9778), (3440, 4889)]