398140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1171}}^1$

素因数の和:1197

約数の個数: 24

約数和(自身を含む): 886032

約数和(自身を除く): 487892

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 1171, 2342, 4684, 5855, 11710, 19907, 23420, 39814, 79628, 99535, 199070, 398140]

約数ペア:

[(1, 398140), (2, 199070), (4, 99535), (5, 79628), (10, 39814), (17, 23420), (20, 19907), (34, 11710), (68, 5855), (85, 4684), (170, 2342), (340, 1171)]