21505544

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{158129}}^1$

素因数の和:158152

約数の個数: 16

約数和(自身を含む): 42695100

約数和(自身を除く): 21189556

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 158129, 316258, 632516, 1265032, 2688193, 5376386, 10752772, 21505544]

約数ペア:

[(1, 21505544), (2, 10752772), (4, 5376386), (8, 2688193), (17, 1265032), (34, 632516), (68, 316258), (136, 158129)]