18945140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{55721}}^1$

素因数の和:55747

約数の個数: 24

約数和(自身を含む): 42125832

約数和(自身を除く): 23180692

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 55721, 111442, 222884, 278605, 557210, 947257, 1114420, 1894514, 3789028, 4736285, 9472570, 18945140]

約数ペア:

[(1, 18945140), (2, 9472570), (4, 4736285), (5, 3789028), (10, 1894514), (17, 1114420), (20, 947257), (34, 557210), (68, 278605), (85, 222884), (170, 111442), (340, 55721)]