28347880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{5857}}^1$

素因数の和:5890

約数の個数: 48

約数和(自身を含む): 70120260

約数和(自身を除く): 41772380

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4840, 5857, 11714, 23428, 29285, 46856, 58570, 64427, 117140, 128854, 234280, 257708, 322135, 515416, 644270, 708697, 1288540, 1417394, 2577080, 2834788, 3543485, 5669576, 7086970, 14173940, 28347880]

約数ペア:

[(1, 28347880), (2, 14173940), (4, 7086970), (5, 5669576), (8, 3543485), (10, 2834788), (11, 2577080), (20, 1417394), (22, 1288540), (40, 708697), (44, 644270), (55, 515416), (88, 322135), (110, 257708), (121, 234280), (220, 128854), (242, 117140), (440, 64427), (484, 58570), (605, 46856), (968, 29285), (1210, 23428), (2420, 11714), (4840, 5857)]