18865184

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{449}}^1$

素因数の和:573

約数の個数: 48

約数和(自身を含む): 40483800

約数和(自身を除く): 21618616

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 101, 104, 202, 208, 404, 416, 449, 808, 898, 1313, 1616, 1796, 2626, 3232, 3592, 5252, 5837, 7184, 10504, 11674, 14368, 21008, 23348, 42016, 45349, 46696, 90698, 93392, 181396, 186784, 362792, 589537, 725584, 1179074, 1451168, 2358148, 4716296, 9432592, 18865184]

約数ペア:

[(1, 18865184), (2, 9432592), (4, 4716296), (8, 2358148), (13, 1451168), (16, 1179074), (26, 725584), (32, 589537), (52, 362792), (101, 186784), (104, 181396), (202, 93392), (208, 90698), (404, 46696), (416, 45349), (449, 42016), (808, 23348), (898, 21008), (1313, 14368), (1616, 11674), (1796, 10504), (2626, 7184), (3232, 5837), (3592, 5252)]