20686768

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{27509}}^1$

素因数の和:27564

約数の個数: 20

約数和(自身を含む): 40934880

約数和(自身を除く): 20248112

約数列:

[1, 2, 4, 8, 16, 47, 94, 188, 376, 752, 27509, 55018, 110036, 220072, 440144, 1292923, 2585846, 5171692, 10343384, 20686768]

約数ペア:

[(1, 20686768), (2, 10343384), (4, 5171692), (8, 2585846), (16, 1292923), (47, 440144), (94, 220072), (188, 110036), (376, 55018), (752, 27509)]