221991405

素因数分解:

$3^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{52667}}^1$

素因数の和:52956

約数の個数: 16

約数和(自身を含む): 356457024

約数和(自身を除く): 134465619

約数列:

[1, 3, 5, 15, 281, 843, 1405, 4215, 52667, 158001, 263335, 790005, 14799427, 44398281, 73997135, 221991405]

約数ペア:

[(1, 221991405), (3, 73997135), (5, 44398281), (15, 14799427), (281, 790005), (843, 263335), (1405, 158001), (4215, 52667)]