18889540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{30467}}^1$

素因数の和:30507

約数の個数: 24

約数和(自身を含む): 40948992

約数和(自身を除く): 22059452

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 30467, 60934, 121868, 152335, 304670, 609340, 944477, 1888954, 3777908, 4722385, 9444770, 18889540]

約数ペア:

[(1, 18889540), (2, 9444770), (4, 4722385), (5, 3777908), (10, 1888954), (20, 944477), (31, 609340), (62, 304670), (124, 152335), (155, 121868), (310, 60934), (620, 30467)]