199939420

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{55849}}^1$

素因数の和:56037

約数の個数: 24

約数和(自身を含む): 422226000

約数和(自身を除く): 222286580

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 55849, 111698, 223396, 279245, 558490, 1116980, 9996971, 19993942, 39987884, 49984855, 99969710, 199939420]

約数ペア:

[(1, 199939420), (2, 99969710), (4, 49984855), (5, 39987884), (10, 19993942), (20, 9996971), (179, 1116980), (358, 558490), (716, 279245), (895, 223396), (1790, 111698), (3580, 55849)]