19102020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{45481}}^1$

素因数の和:45500

約数の個数: 48

約数和(自身を含む): 61127808

約数和(自身を除く): 42025788

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 45481, 90962, 136443, 181924, 227405, 272886, 318367, 454810, 545772, 636734, 682215, 909620, 955101, 1273468, 1364430, 1591835, 1910202, 2728860, 3183670, 3820404, 4775505, 6367340, 9551010, 19102020]

約数ペア:

[(1, 19102020), (2, 9551010), (3, 6367340), (4, 4775505), (5, 3820404), (6, 3183670), (7, 2728860), (10, 1910202), (12, 1591835), (14, 1364430), (15, 1273468), (20, 955101), (21, 909620), (28, 682215), (30, 636734), (35, 545772), (42, 454810), (60, 318367), (70, 272886), (84, 227405), (105, 181924), (140, 136443), (210, 90962), (420, 45481)]