21759080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77711}}^1$

素因数の和:77729

約数の個数: 32

約数和(自身を含む): 55952640

約数和(自身を除く): 34193560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77711, 155422, 310844, 388555, 543977, 621688, 777110, 1087954, 1554220, 2175908, 2719885, 3108440, 4351816, 5439770, 10879540, 21759080]

約数ペア:

[(1, 21759080), (2, 10879540), (4, 5439770), (5, 4351816), (7, 3108440), (8, 2719885), (10, 2175908), (14, 1554220), (20, 1087954), (28, 777110), (35, 621688), (40, 543977), (56, 388555), (70, 310844), (140, 155422), (280, 77711)]