17820620

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{4523}}^1$

素因数の和:4729

約数の個数: 24

約数和(自身を含む): 37621584

約数和(自身を除く): 19800964

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 4523, 9046, 18092, 22615, 45230, 90460, 891031, 1782062, 3564124, 4455155, 8910310, 17820620]

約数ペア:

[(1, 17820620), (2, 8910310), (4, 4455155), (5, 3564124), (10, 1782062), (20, 891031), (197, 90460), (394, 45230), (788, 22615), (985, 18092), (1970, 9046), (3940, 4523)]