217551405

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{331}}^1\times {\mathrm{1019}}^1$

素因数の和:1401

約数の個数: 32

約数和(自身を含む): 357603840

約数和(自身を除く): 140052435

約数列:

[1, 3, 5, 15, 43, 129, 215, 331, 645, 993, 1019, 1655, 3057, 4965, 5095, 14233, 15285, 42699, 43817, 71165, 131451, 213495, 219085, 337289, 657255, 1011867, 1686445, 5059335, 14503427, 43510281, 72517135, 217551405]

約数ペア:

[(1, 217551405), (3, 72517135), (5, 43510281), (15, 14503427), (43, 5059335), (129, 1686445), (215, 1011867), (331, 657255), (645, 337289), (993, 219085), (1019, 213495), (1655, 131451), (3057, 71165), (4965, 43817), (5095, 42699), (14233, 15285)]