18840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{157}}^1$

素因数の和:171

約数の個数: 32

約数和(自身を含む): 56880

約数和(自身を除く): 38040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 157, 314, 471, 628, 785, 942, 1256, 1570, 1884, 2355, 3140, 3768, 4710, 6280, 9420, 18840]

約数ペア:

[(1, 18840), (2, 9420), (3, 6280), (4, 4710), (5, 3768), (6, 3140), (8, 2355), (10, 1884), (12, 1570), (15, 1256), (20, 942), (24, 785), (30, 628), (40, 471), (60, 314), (120, 157)]