90103640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{204781}}^1$

素因数の和:204803

約数の個数: 32

約数和(自身を含む): 221164560

約数和(自身を除く): 131060920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 204781, 409562, 819124, 1023905, 1638248, 2047810, 2252591, 4095620, 4505182, 8191240, 9010364, 11262955, 18020728, 22525910, 45051820, 90103640]

約数ペア:

[(1, 90103640), (2, 45051820), (4, 22525910), (5, 18020728), (8, 11262955), (10, 9010364), (11, 8191240), (20, 4505182), (22, 4095620), (40, 2252591), (44, 2047810), (55, 1638248), (88, 1023905), (110, 819124), (220, 409562), (440, 204781)]