21790544

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{20327}}^1$

素因数の和:20402

約数の個数: 20

約数和(自身を含む): 42851424

約数和(自身を除く): 21060880

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 20327, 40654, 81308, 162616, 325232, 1361909, 2723818, 5447636, 10895272, 21790544]

約数ペア:

[(1, 21790544), (2, 10895272), (4, 5447636), (8, 2723818), (16, 1361909), (67, 325232), (134, 162616), (268, 81308), (536, 40654), (1072, 20327)]