18789520

素因数分解:

$2^4\times 5^1\times {\mathrm{234869}}^1$

素因数の和:234882

約数の個数: 20

約数和(自身を含む): 43685820

約数和(自身を除く): 24896300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 234869, 469738, 939476, 1174345, 1878952, 2348690, 3757904, 4697380, 9394760, 18789520]

約数ペア:

[(1, 18789520), (2, 9394760), (4, 4697380), (5, 3757904), (8, 2348690), (10, 1878952), (16, 1174345), (20, 939476), (40, 469738), (80, 234869)]