201121520

素因数分解:

$2^4\times 5^1\times {\mathrm{2514019}}^1$

素因数の和:2514032

約数の個数: 20

約数和(自身を含む): 467607720

約数和(自身を除く): 266486200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2514019, 5028038, 10056076, 12570095, 20112152, 25140190, 40224304, 50280380, 100560760, 201121520]

約数ペア:

[(1, 201121520), (2, 100560760), (4, 50280380), (5, 40224304), (8, 25140190), (10, 20112152), (16, 12570095), (20, 10056076), (40, 5028038), (80, 2514019)]