19695280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22381}}^1$

素因数の和:22405

約数の個数: 40

約数和(自身を含む): 49956624

約数和(自身を除く): 30261344

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22381, 44762, 89524, 111905, 179048, 223810, 246191, 358096, 447620, 492382, 895240, 984764, 1230955, 1790480, 1969528, 2461910, 3939056, 4923820, 9847640, 19695280]

約数ペア:

[(1, 19695280), (2, 9847640), (4, 4923820), (5, 3939056), (8, 2461910), (10, 1969528), (11, 1790480), (16, 1230955), (20, 984764), (22, 895240), (40, 492382), (44, 447620), (55, 358096), (80, 246191), (88, 223810), (110, 179048), (176, 111905), (220, 89524), (440, 44762), (880, 22381)]