218338281

素因数分解:

$3^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{8311}}^1$

素因数の和:8466

約数の個数: 32

約数和(自身を含む): 372377600

約数和(自身を除く): 154039319

約数列:

[1, 3, 7, 9, 21, 27, 63, 139, 189, 417, 973, 1251, 2919, 3753, 8311, 8757, 24933, 26271, 58177, 74799, 174531, 224397, 523593, 1155229, 1570779, 3465687, 8086603, 10397061, 24259809, 31191183, 72779427, 218338281]

約数ペア:

[(1, 218338281), (3, 72779427), (7, 31191183), (9, 24259809), (21, 10397061), (27, 8086603), (63, 3465687), (139, 1570779), (189, 1155229), (417, 523593), (973, 224397), (1251, 174531), (2919, 74799), (3753, 58177), (8311, 26271), (8757, 24933)]