20697232

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{661}}^1$

素因数の和:791

約数の個数: 40

約数和(自身を含む): 42685760

約数和(自身を除く): 21988528

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 103, 152, 206, 304, 412, 661, 824, 1322, 1648, 1957, 2644, 3914, 5288, 7828, 10576, 12559, 15656, 25118, 31312, 50236, 68083, 100472, 136166, 200944, 272332, 544664, 1089328, 1293577, 2587154, 5174308, 10348616, 20697232]

約数ペア:

[(1, 20697232), (2, 10348616), (4, 5174308), (8, 2587154), (16, 1293577), (19, 1089328), (38, 544664), (76, 272332), (103, 200944), (152, 136166), (206, 100472), (304, 68083), (412, 50236), (661, 31312), (824, 25118), (1322, 15656), (1648, 12559), (1957, 10576), (2644, 7828), (3914, 5288)]