168920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:155

約数の個数: 32

約数和(自身を含む): 393120

約数和(自身を除く): 224200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 103, 164, 205, 206, 328, 410, 412, 515, 820, 824, 1030, 1640, 2060, 4120, 4223, 8446, 16892, 21115, 33784, 42230, 84460, 168920]

約数ペア:

[(1, 168920), (2, 84460), (4, 42230), (5, 33784), (8, 21115), (10, 16892), (20, 8446), (40, 4223), (41, 4120), (82, 2060), (103, 1640), (164, 1030), (205, 824), (206, 820), (328, 515), (410, 412)]