78826880

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11197}}^1$

素因数の和:11227

約数の個数: 64

約数和(自身を含む): 205595280

約数和(自身を除く): 126768400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 3520, 7040, 11197, 22394, 44788, 55985, 89576, 111970, 123167, 179152, 223940, 246334, 358304, 447880, 492668, 615835, 716608, 895760, 985336, 1231670, 1433216, 1791520, 1970672, 2463340, 3583040, 3941344, 4926680, 7166080, 7882688, 9853360, 15765376, 19706720, 39413440, 78826880]

約数ペア:

[(1, 78826880), (2, 39413440), (4, 19706720), (5, 15765376), (8, 9853360), (10, 7882688), (11, 7166080), (16, 4926680), (20, 3941344), (22, 3583040), (32, 2463340), (40, 1970672), (44, 1791520), (55, 1433216), (64, 1231670), (80, 985336), (88, 895760), (110, 716608), (128, 615835), (160, 492668), (176, 447880), (220, 358304), (320, 246334), (352, 223940), (440, 179152), (640, 123167), (704, 111970), (880, 89576), (1408, 55985), (1760, 44788), (3520, 22394), (7040, 11197)]