18147969

素因数分解:

$3^5\times 7^1\times {\mathrm{47}}^1\times {\mathrm{227}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 31868928

約数和(自身を除く): 13720959

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 81, 141, 189, 227, 243, 329, 423, 567, 681, 987, 1269, 1589, 1701, 2043, 2961, 3807, 4767, 6129, 8883, 10669, 11421, 14301, 18387, 26649, 32007, 42903, 55161, 74683, 79947, 96021, 128709, 224049, 288063, 386127, 672147, 864189, 2016441, 2592567, 6049323, 18147969]

約数ペア:

[(1, 18147969), (3, 6049323), (7, 2592567), (9, 2016441), (21, 864189), (27, 672147), (47, 386127), (63, 288063), (81, 224049), (141, 128709), (189, 96021), (227, 79947), (243, 74683), (329, 55161), (423, 42903), (567, 32007), (681, 26649), (987, 18387), (1269, 14301), (1589, 11421), (1701, 10669), (2043, 8883), (2961, 6129), (3807, 4767)]