1263640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{4513}}^1$

素因数の和:4531

約数の個数: 32

約数和(自身を含む): 3250080

約数和(自身を除く): 1986440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 4513, 9026, 18052, 22565, 31591, 36104, 45130, 63182, 90260, 126364, 157955, 180520, 252728, 315910, 631820, 1263640]

約数ペア:

[(1, 1263640), (2, 631820), (4, 315910), (5, 252728), (7, 180520), (8, 157955), (10, 126364), (14, 90260), (20, 63182), (28, 45130), (35, 36104), (40, 31591), (56, 22565), (70, 18052), (140, 9026), (280, 4513)]