81322240

素因数分解:

$2^8\times 5^1\times {\mathrm{63533}}^1$

素因数の和:63554

約数の個数: 36

約数和(自身を含む): 194795244

約数和(自身を除く): 113473004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 63533, 127066, 254132, 317665, 508264, 635330, 1016528, 1270660, 2033056, 2541320, 4066112, 5082640, 8132224, 10165280, 16264448, 20330560, 40661120, 81322240]

約数ペア:

[(1, 81322240), (2, 40661120), (4, 20330560), (5, 16264448), (8, 10165280), (10, 8132224), (16, 5082640), (20, 4066112), (32, 2541320), (40, 2033056), (64, 1270660), (80, 1016528), (128, 635330), (160, 508264), (256, 317665), (320, 254132), (640, 127066), (1280, 63533)]