2542220

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1609}}^1$

素因数の和:1697

約数の個数: 24

約数和(自身を含む): 5409600

約数和(自身を除く): 2867380

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 1609, 3218, 6436, 8045, 16090, 32180, 127111, 254222, 508444, 635555, 1271110, 2542220]

約数ペア:

[(1, 2542220), (2, 1271110), (4, 635555), (5, 508444), (10, 254222), (20, 127111), (79, 32180), (158, 16090), (316, 8045), (395, 6436), (790, 3218), (1580, 1609)]