18511420

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^2\times {\mathrm{419}}^1$

素因数の和:522

約数の個数: 36

約数和(自身を含む): 39813480

約数和(自身を除く): 21302060

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 419, 470, 838, 940, 1676, 2095, 2209, 4190, 4418, 8380, 8836, 11045, 19693, 22090, 39386, 44180, 78772, 98465, 196930, 393860, 925571, 1851142, 3702284, 4627855, 9255710, 18511420]

約数ペア:

[(1, 18511420), (2, 9255710), (4, 4627855), (5, 3702284), (10, 1851142), (20, 925571), (47, 393860), (94, 196930), (188, 98465), (235, 78772), (419, 44180), (470, 39386), (838, 22090), (940, 19693), (1676, 11045), (2095, 8836), (2209, 8380), (4190, 4418)]