679780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{829}}^1$

素因数の和:879

約数の個数: 24

約数和(自身を含む): 1464120

約数和(自身を除く): 784340

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 829, 1658, 3316, 4145, 8290, 16580, 33989, 67978, 135956, 169945, 339890, 679780]

約数ペア:

[(1, 679780), (2, 339890), (4, 169945), (5, 135956), (10, 67978), (20, 33989), (41, 16580), (82, 8290), (164, 4145), (205, 3316), (410, 1658), (820, 829)]