21003184

素因数分解:

$2^4\times {\mathrm{1051}}^1\times {\mathrm{1249}}^1$

素因数の和:2308

約数の個数: 20

約数和(自身を含む): 40765000

約数和(自身を除く): 19761816

約数列:

[1, 2, 4, 8, 16, 1051, 1249, 2102, 2498, 4204, 4996, 8408, 9992, 16816, 19984, 1312699, 2625398, 5250796, 10501592, 21003184]

約数ペア:

[(1, 21003184), (2, 10501592), (4, 5250796), (8, 2625398), (16, 1312699), (1051, 19984), (1249, 16816), (2102, 9992), (2498, 8408), (4204, 4996)]