21818140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{64171}}^1$

素因数の和:64197

約数の個数: 24

約数和(自身を含む): 48514032

約数和(自身を除く): 26695892

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 64171, 128342, 256684, 320855, 641710, 1090907, 1283420, 2181814, 4363628, 5454535, 10909070, 21818140]

約数ペア:

[(1, 21818140), (2, 10909070), (4, 5454535), (5, 4363628), (10, 2181814), (17, 1283420), (20, 1090907), (34, 641710), (68, 320855), (85, 256684), (170, 128342), (340, 64171)]