19664120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{70229}}^1$

素因数の和:70247

約数の個数: 32

約数和(自身を含む): 50565600

約数和(自身を除く): 30901480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 70229, 140458, 280916, 351145, 491603, 561832, 702290, 983206, 1404580, 1966412, 2458015, 2809160, 3932824, 4916030, 9832060, 19664120]

約数ペア:

[(1, 19664120), (2, 9832060), (4, 4916030), (5, 3932824), (7, 2809160), (8, 2458015), (10, 1966412), (14, 1404580), (20, 983206), (28, 702290), (35, 561832), (40, 491603), (56, 351145), (70, 280916), (140, 140458), (280, 70229)]