19946320

素因数分解:

$2^4\times 5^1\times {\mathrm{249329}}^1$

素因数の和:249342

約数の個数: 20

約数和(自身を含む): 46375380

約数和(自身を除く): 26429060

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 249329, 498658, 997316, 1246645, 1994632, 2493290, 3989264, 4986580, 9973160, 19946320]

約数ペア:

[(1, 19946320), (2, 9973160), (4, 4986580), (5, 3989264), (8, 2493290), (10, 1994632), (16, 1246645), (20, 997316), (40, 498658), (80, 249329)]