18970281

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 31868928

約数和(自身を除く): 12898647

約数列:

[1, 3, 9, 11, 27, 33, 47, 81, 99, 141, 151, 243, 297, 423, 453, 517, 891, 1269, 1359, 1551, 1661, 2673, 3807, 4077, 4653, 4983, 7097, 11421, 12231, 13959, 14949, 21291, 36693, 41877, 44847, 63873, 78067, 125631, 134541, 191619, 234201, 403623, 574857, 702603, 1724571, 2107809, 6323427, 18970281]

約数ペア:

[(1, 18970281), (3, 6323427), (9, 2107809), (11, 1724571), (27, 702603), (33, 574857), (47, 403623), (81, 234201), (99, 191619), (141, 134541), (151, 125631), (243, 78067), (297, 63873), (423, 44847), (453, 41877), (517, 36693), (891, 21291), (1269, 14949), (1359, 13959), (1551, 12231), (1661, 11421), (2673, 7097), (3807, 4983), (4077, 4653)]