221618978

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{259507}}^1$

素因数の和:259577

約数の個数: 16

約数和(自身を含む): 386147904

約数和(自身を除く): 164528926

約数列:

[1, 2, 7, 14, 61, 122, 427, 854, 259507, 519014, 1816549, 3633098, 15829927, 31659854, 110809489, 221618978]

約数ペア:

[(1, 221618978), (2, 110809489), (7, 31659854), (14, 15829927), (61, 3633098), (122, 1816549), (427, 519014), (854, 259507)]