19917618

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1831}}^1$

素因数の和:1887

約数の個数: 48

約数和(自身を含む): 47617344

約数和(自身を除く): 27699726

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 49, 74, 98, 111, 147, 222, 259, 294, 518, 777, 1554, 1813, 1831, 3626, 3662, 5439, 5493, 10878, 10986, 12817, 25634, 38451, 67747, 76902, 89719, 135494, 179438, 203241, 269157, 406482, 474229, 538314, 948458, 1422687, 2845374, 3319603, 6639206, 9958809, 19917618]

約数ペア:

[(1, 19917618), (2, 9958809), (3, 6639206), (6, 3319603), (7, 2845374), (14, 1422687), (21, 948458), (37, 538314), (42, 474229), (49, 406482), (74, 269157), (98, 203241), (111, 179438), (147, 135494), (222, 89719), (259, 76902), (294, 67747), (518, 38451), (777, 25634), (1554, 12817), (1813, 10986), (1831, 10878), (3626, 5493), (3662, 5439)]