20506480

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8839}}^1$

素因数の和:8881

約数の個数: 40

約数和(自身を含む): 49327200

約数和(自身を除く): 28820720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8839, 17678, 35356, 44195, 70712, 88390, 141424, 176780, 256331, 353560, 512662, 707120, 1025324, 1281655, 2050648, 2563310, 4101296, 5126620, 10253240, 20506480]

約数ペア:

[(1, 20506480), (2, 10253240), (4, 5126620), (5, 4101296), (8, 2563310), (10, 2050648), (16, 1281655), (20, 1025324), (29, 707120), (40, 512662), (58, 353560), (80, 256331), (116, 176780), (145, 141424), (232, 88390), (290, 70712), (464, 44195), (580, 35356), (1160, 17678), (2320, 8839)]