89420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1$

素因数の和:289

約数の個数: 24

約数和(自身を含む): 199584

約数和(自身を除く): 110164

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 263, 340, 526, 1052, 1315, 2630, 4471, 5260, 8942, 17884, 22355, 44710, 89420]

約数ペア:

[(1, 89420), (2, 44710), (4, 22355), (5, 17884), (10, 8942), (17, 5260), (20, 4471), (34, 2630), (68, 1315), (85, 1052), (170, 526), (263, 340)]