18945004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{739}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 39160800

約数和(自身を除く): 20215796

約数列:

[1, 2, 4, 13, 17, 26, 29, 34, 52, 58, 68, 116, 221, 377, 442, 493, 739, 754, 884, 986, 1478, 1508, 1972, 2956, 6409, 9607, 12563, 12818, 19214, 21431, 25126, 25636, 38428, 42862, 50252, 85724, 163319, 278603, 326638, 364327, 557206, 653276, 728654, 1114412, 1457308, 4736251, 9472502, 18945004]

約数ペア:

[(1, 18945004), (2, 9472502), (4, 4736251), (13, 1457308), (17, 1114412), (26, 728654), (29, 653276), (34, 557206), (52, 364327), (58, 326638), (68, 278603), (116, 163319), (221, 85724), (377, 50252), (442, 42862), (493, 38428), (739, 25636), (754, 25126), (884, 21431), (986, 19214), (1478, 12818), (1508, 12563), (1972, 9607), (2956, 6409)]