21223055

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{673}}^1$

素因数の和:755

約数の個数: 32

約数和(自身を含む): 31446144

約数和(自身を除く): 10223089

約数列:

[1, 5, 7, 17, 35, 53, 85, 119, 265, 371, 595, 673, 901, 1855, 3365, 4505, 4711, 6307, 11441, 23555, 31535, 35669, 57205, 80087, 178345, 249683, 400435, 606373, 1248415, 3031865, 4244611, 21223055]

約数ペア:

[(1, 21223055), (5, 4244611), (7, 3031865), (17, 1248415), (35, 606373), (53, 400435), (85, 249683), (119, 178345), (265, 80087), (371, 57205), (595, 35669), (673, 31535), (901, 23555), (1855, 11441), (3365, 6307), (4505, 4711)]