21255240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{177127}}^1$

素因数の和:177141

約数の個数: 32

約数和(自身を含む): 63766080

約数和(自身を除く): 42510840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 177127, 354254, 531381, 708508, 885635, 1062762, 1417016, 1771270, 2125524, 2656905, 3542540, 4251048, 5313810, 7085080, 10627620, 21255240]

約数ペア:

[(1, 21255240), (2, 10627620), (3, 7085080), (4, 5313810), (5, 4251048), (6, 3542540), (8, 2656905), (10, 2125524), (12, 1771270), (15, 1417016), (20, 1062762), (24, 885635), (30, 708508), (40, 531381), (60, 354254), (120, 177127)]