12728920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{18719}}^1$

素因数の和:18747

約数の個数: 32

約数和(自身を含む): 30326400

約数和(自身を除く): 17597480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 18719, 37438, 74876, 93595, 149752, 187190, 318223, 374380, 636446, 748760, 1272892, 1591115, 2545784, 3182230, 6364460, 12728920]

約数ペア:

[(1, 12728920), (2, 6364460), (4, 3182230), (5, 2545784), (8, 1591115), (10, 1272892), (17, 748760), (20, 636446), (34, 374380), (40, 318223), (68, 187190), (85, 149752), (136, 93595), (170, 74876), (340, 37438), (680, 18719)]