16321040

素因数分解:

$2^4\times 5^1\times {\mathrm{204013}}^1$

素因数の和:204026

約数の個数: 20

約数和(自身を含む): 37946604

約数和(自身を除く): 21625564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 204013, 408026, 816052, 1020065, 1632104, 2040130, 3264208, 4080260, 8160520, 16321040]

約数ペア:

[(1, 16321040), (2, 8160520), (4, 4080260), (5, 3264208), (8, 2040130), (10, 1632104), (16, 1020065), (20, 816052), (40, 408026), (80, 204013)]