28666880

素因数分解:

$2^{10}\times 5^1\times {\mathrm{11}}^1\times {\mathrm{509}}^1$

素因数の和:545

約数の個数: 88

約数和(自身を含む): 75165840

約数和(自身を除く): 46498960

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, 256, 320, 352, 440, 509, 512, 640, 704, 880, 1018, 1024, 1280, 1408, 1760, 2036, 2545, 2560, 2816, 3520, 4072, 5090, 5120, 5599, 5632, 7040, 8144, 10180, 11198, 11264, 14080, 16288, 20360, 22396, 27995, 28160, 32576, 40720, 44792, 55990, 56320, 65152, 81440, 89584, 111980, 130304, 162880, 179168, 223960, 260608, 325760, 358336, 447920, 521216, 651520, 716672, 895840, 1303040, 1433344, 1791680, 2606080, 2866688, 3583360, 5733376, 7166720, 14333440, 28666880]

約数ペア:

[(1, 28666880), (2, 14333440), (4, 7166720), (5, 5733376), (8, 3583360), (10, 2866688), (11, 2606080), (16, 1791680), (20, 1433344), (22, 1303040), (32, 895840), (40, 716672), (44, 651520), (55, 521216), (64, 447920), (80, 358336), (88, 325760), (110, 260608), (128, 223960), (160, 179168), (176, 162880), (220, 130304), (256, 111980), (320, 89584), (352, 81440), (440, 65152), (509, 56320), (512, 55990), (640, 44792), (704, 40720), (880, 32576), (1018, 28160), (1024, 27995), (1280, 22396), (1408, 20360), (1760, 16288), (2036, 14080), (2545, 11264), (2560, 11198), (2816, 10180), (3520, 8144), (4072, 7040), (5090, 5632), (5120, 5599)]