18884420

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{4793}}^1$

素因数の和:4999

約数の個数: 24

約数和(自身を含む): 39866904

約数和(自身を除く): 20982484

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 4793, 9586, 19172, 23965, 47930, 95860, 944221, 1888442, 3776884, 4721105, 9442210, 18884420]

約数ペア:

[(1, 18884420), (2, 9442210), (4, 4721105), (5, 3776884), (10, 1888442), (20, 944221), (197, 95860), (394, 47930), (788, 23965), (985, 19172), (1970, 9586), (3940, 4793)]