18977840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{33889}}^1$

素因数の和:33909

約数の個数: 40

約数和(自身を含む): 50428320

約数和(自身を除く): 31450480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 33889, 67778, 135556, 169445, 237223, 271112, 338890, 474446, 542224, 677780, 948892, 1186115, 1355560, 1897784, 2372230, 2711120, 3795568, 4744460, 9488920, 18977840]

約数ペア:

[(1, 18977840), (2, 9488920), (4, 4744460), (5, 3795568), (7, 2711120), (8, 2372230), (10, 1897784), (14, 1355560), (16, 1186115), (20, 948892), (28, 677780), (35, 542224), (40, 474446), (56, 338890), (70, 271112), (80, 237223), (112, 169445), (140, 135556), (280, 67778), (560, 33889)]