18120520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41183}}^1$

素因数の和:41205

約数の個数: 32

約数和(自身を含む): 44478720

約数和(自身を除く): 26358200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 41183, 82366, 164732, 205915, 329464, 411830, 453013, 823660, 906026, 1647320, 1812052, 2265065, 3624104, 4530130, 9060260, 18120520]

約数ペア:

[(1, 18120520), (2, 9060260), (4, 4530130), (5, 3624104), (8, 2265065), (10, 1812052), (11, 1647320), (20, 906026), (22, 823660), (40, 453013), (44, 411830), (55, 329464), (88, 205915), (110, 164732), (220, 82366), (440, 41183)]