19902896

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{929}}^1$

素因数の和:1053

約数の個数: 40

約数和(自身を含む): 41976480

約数和(自身を除く): 22073584

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 103, 104, 206, 208, 412, 824, 929, 1339, 1648, 1858, 2678, 3716, 5356, 7432, 10712, 12077, 14864, 21424, 24154, 48308, 95687, 96616, 191374, 193232, 382748, 765496, 1243931, 1530992, 2487862, 4975724, 9951448, 19902896]

約数ペア:

[(1, 19902896), (2, 9951448), (4, 4975724), (8, 2487862), (13, 1530992), (16, 1243931), (26, 765496), (52, 382748), (103, 193232), (104, 191374), (206, 96616), (208, 95687), (412, 48308), (824, 24154), (929, 21424), (1339, 14864), (1648, 12077), (1858, 10712), (2678, 7432), (3716, 5356)]