18993490

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21341}}^1$

素因数の和:21437

約数の個数: 16

約数和(自身を含む): 34574040

約数和(自身を除く): 15580550

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 21341, 42682, 106705, 213410, 1899349, 3798698, 9496745, 18993490]

約数ペア:

[(1, 18993490), (2, 9496745), (5, 3798698), (10, 1899349), (89, 213410), (178, 106705), (445, 42682), (890, 21341)]