20917888

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{9613}}^1$

素因数の和:9644

約数の個数: 32

約数和(自身を含む): 44128260

約数和(自身を除く): 23210372

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 272, 544, 1088, 2176, 9613, 19226, 38452, 76904, 153808, 163421, 307616, 326842, 615232, 653684, 1230464, 1307368, 2614736, 5229472, 10458944, 20917888]

約数ペア:

[(1, 20917888), (2, 10458944), (4, 5229472), (8, 2614736), (16, 1307368), (17, 1230464), (32, 653684), (34, 615232), (64, 326842), (68, 307616), (128, 163421), (136, 153808), (272, 76904), (544, 38452), (1088, 19226), (2176, 9613)]