19955985

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1429}}^1$

素因数の和:1470

約数の個数: 48

約数和(自身を含む): 39124800

約数和(自身を除く): 19168815

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 245, 285, 399, 665, 735, 931, 1429, 1995, 2793, 4287, 4655, 7145, 10003, 13965, 21435, 27151, 30009, 50015, 70021, 81453, 135755, 150045, 190057, 210063, 350105, 407265, 570171, 950285, 1050315, 1330399, 2850855, 3991197, 6651995, 19955985]

約数ペア:

[(1, 19955985), (3, 6651995), (5, 3991197), (7, 2850855), (15, 1330399), (19, 1050315), (21, 950285), (35, 570171), (49, 407265), (57, 350105), (95, 210063), (105, 190057), (133, 150045), (147, 135755), (245, 81453), (285, 70021), (399, 50015), (665, 30009), (735, 27151), (931, 21435), (1429, 13965), (1995, 10003), (2793, 7145), (4287, 4655)]