201221405

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{3329}}^1$

素因数の和:3509

約数の個数: 32

約数和(自身を含む): 303056640

約数和(自身を除く): 101835235

約数列:

[1, 5, 7, 11, 35, 55, 77, 157, 385, 785, 1099, 1727, 3329, 5495, 8635, 12089, 16645, 23303, 36619, 60445, 116515, 183095, 256333, 522653, 1281665, 2613265, 3658571, 5749183, 18292855, 28745915, 40244281, 201221405]

約数ペア:

[(1, 201221405), (5, 40244281), (7, 28745915), (11, 18292855), (35, 5749183), (55, 3658571), (77, 2613265), (157, 1281665), (385, 522653), (785, 256333), (1099, 183095), (1727, 116515), (3329, 60445), (5495, 36619), (8635, 23303), (12089, 16645)]