21505136

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{79063}}^1$

素因数の和:79088

約数の個数: 20

約数和(自身を含む): 44117712

約数和(自身を除く): 22612576

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 79063, 158126, 316252, 632504, 1265008, 1344071, 2688142, 5376284, 10752568, 21505136]

約数ペア:

[(1, 21505136), (2, 10752568), (4, 5376284), (8, 2688142), (16, 1344071), (17, 1265008), (34, 632504), (68, 316252), (136, 158126), (272, 79063)]