21386760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{178223}}^1$

素因数の和:178237

約数の個数: 32

約数和(自身を含む): 64160640

約数和(自身を除く): 42773880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 178223, 356446, 534669, 712892, 891115, 1069338, 1425784, 1782230, 2138676, 2673345, 3564460, 4277352, 5346690, 7128920, 10693380, 21386760]

約数ペア:

[(1, 21386760), (2, 10693380), (3, 7128920), (4, 5346690), (5, 4277352), (6, 3564460), (8, 2673345), (10, 2138676), (12, 1782230), (15, 1425784), (20, 1069338), (24, 891115), (30, 712892), (40, 534669), (60, 356446), (120, 178223)]