18443920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20959}}^1$

素因数の和:20983

約数の個数: 40

約数和(自身を含む): 46782720

約数和(自身を除く): 28338800

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 20959, 41918, 83836, 104795, 167672, 209590, 230549, 335344, 419180, 461098, 838360, 922196, 1152745, 1676720, 1844392, 2305490, 3688784, 4610980, 9221960, 18443920]

約数ペア:

[(1, 18443920), (2, 9221960), (4, 4610980), (5, 3688784), (8, 2305490), (10, 1844392), (11, 1676720), (16, 1152745), (20, 922196), (22, 838360), (40, 461098), (44, 419180), (55, 335344), (80, 230549), (88, 209590), (110, 167672), (176, 104795), (220, 83836), (440, 41918), (880, 20959)]