18087280

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2113}}^1$

素因数の和:2233

約数の個数: 40

約数和(自身を含む): 42466032

約数和(自身を除く): 24378752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2113, 2140, 4226, 4280, 8452, 8560, 10565, 16904, 21130, 33808, 42260, 84520, 169040, 226091, 452182, 904364, 1130455, 1808728, 2260910, 3617456, 4521820, 9043640, 18087280]

約数ペア:

[(1, 18087280), (2, 9043640), (4, 4521820), (5, 3617456), (8, 2260910), (10, 1808728), (16, 1130455), (20, 904364), (40, 452182), (80, 226091), (107, 169040), (214, 84520), (428, 42260), (535, 33808), (856, 21130), (1070, 16904), (1712, 10565), (2113, 8560), (2140, 8452), (4226, 4280)]