20900128

素因数分解:

$2^5\times {\mathrm{71}}^1\times {\mathrm{9199}}^1$

素因数の和:9280

約数の個数: 24

約数和(自身を含む): 41731200

約数和(自身を除く): 20831072

約数列:

[1, 2, 4, 8, 16, 32, 71, 142, 284, 568, 1136, 2272, 9199, 18398, 36796, 73592, 147184, 294368, 653129, 1306258, 2612516, 5225032, 10450064, 20900128]

約数ペア:

[(1, 20900128), (2, 10450064), (4, 5225032), (8, 2612516), (16, 1306258), (32, 653129), (71, 294368), (142, 147184), (284, 73592), (568, 36796), (1136, 18398), (2272, 9199)]