20866725

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8431}}^1$

素因数の和:8458

約数の個数: 36

約数和(自身を含む): 40777152

約数和(自身を除く): 19910427

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8431, 25293, 42155, 75879, 92741, 126465, 210775, 278223, 379395, 463705, 632325, 834669, 1391115, 1896975, 2318525, 4173345, 6955575, 20866725]

約数ペア:

[(1, 20866725), (3, 6955575), (5, 4173345), (9, 2318525), (11, 1896975), (15, 1391115), (25, 834669), (33, 632325), (45, 463705), (55, 379395), (75, 278223), (99, 210775), (165, 126465), (225, 92741), (275, 75879), (495, 42155), (825, 25293), (2475, 8431)]