80941840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{144539}}^1$

素因数の和:144559

約数の個数: 40

約数和(自身を含む): 215075520

約数和(自身を除く): 134133680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 144539, 289078, 578156, 722695, 1011773, 1156312, 1445390, 2023546, 2312624, 2890780, 4047092, 5058865, 5781560, 8094184, 10117730, 11563120, 16188368, 20235460, 40470920, 80941840]

約数ペア:

[(1, 80941840), (2, 40470920), (4, 20235460), (5, 16188368), (7, 11563120), (8, 10117730), (10, 8094184), (14, 5781560), (16, 5058865), (20, 4047092), (28, 2890780), (35, 2312624), (40, 2023546), (56, 1445390), (70, 1156312), (80, 1011773), (112, 722695), (140, 578156), (280, 289078), (560, 144539)]