20938864

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{541}}^1$

素因数の和:649

約数の個数: 40

約数和(自身を含む): 42341040

約数和(自身を除く): 21402176

約数列:

[1, 2, 4, 8, 16, 41, 59, 82, 118, 164, 236, 328, 472, 541, 656, 944, 1082, 2164, 2419, 4328, 4838, 8656, 9676, 19352, 22181, 31919, 38704, 44362, 63838, 88724, 127676, 177448, 255352, 354896, 510704, 1308679, 2617358, 5234716, 10469432, 20938864]

約数ペア:

[(1, 20938864), (2, 10469432), (4, 5234716), (8, 2617358), (16, 1308679), (41, 510704), (59, 354896), (82, 255352), (118, 177448), (164, 127676), (236, 88724), (328, 63838), (472, 44362), (541, 38704), (656, 31919), (944, 22181), (1082, 19352), (2164, 9676), (2419, 8656), (4328, 4838)]