21097136

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77563}}^1$

素因数の和:77588

約数の個数: 20

約数和(自身を含む): 43280712

約数和(自身を除く): 22183576

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77563, 155126, 310252, 620504, 1241008, 1318571, 2637142, 5274284, 10548568, 21097136]

約数ペア:

[(1, 21097136), (2, 10548568), (4, 5274284), (8, 2637142), (16, 1318571), (17, 1241008), (34, 620504), (68, 310252), (136, 155126), (272, 77563)]