639828

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{2539}}^1$

素因数の和:2556

約数の個数: 36

約数和(自身を含む): 1849120

約数和(自身を除く): 1209292

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 2539, 5078, 7617, 10156, 15234, 17773, 22851, 30468, 35546, 45702, 53319, 71092, 91404, 106638, 159957, 213276, 319914, 639828]

約数ペア:

[(1, 639828), (2, 319914), (3, 213276), (4, 159957), (6, 106638), (7, 91404), (9, 71092), (12, 53319), (14, 45702), (18, 35546), (21, 30468), (28, 22851), (36, 17773), (42, 15234), (63, 10156), (84, 7617), (126, 5078), (252, 2539)]