8481280

素因数分解:

$2^9\times 5^1\times {\mathrm{3313}}^1$

素因数の和:3336

約数の個数: 40

約数和(自身を含む): 20341332

約数和(自身を除く): 11860052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 3313, 6626, 13252, 16565, 26504, 33130, 53008, 66260, 106016, 132520, 212032, 265040, 424064, 530080, 848128, 1060160, 1696256, 2120320, 4240640, 8481280]

約数ペア:

[(1, 8481280), (2, 4240640), (4, 2120320), (5, 1696256), (8, 1060160), (10, 848128), (16, 530080), (20, 424064), (32, 265040), (40, 212032), (64, 132520), (80, 106016), (128, 66260), (160, 53008), (256, 33130), (320, 26504), (512, 16565), (640, 13252), (1280, 6626), (2560, 3313)]