19978910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:297

約数の個数: 64

約数和(自身を含む): 44209152

約数和(自身を除く): 24230242

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 103, 119, 163, 170, 206, 238, 326, 515, 595, 721, 815, 1030, 1141, 1190, 1442, 1630, 1751, 2282, 2771, 3502, 3605, 5542, 5705, 7210, 8755, 11410, 12257, 13855, 16789, 17510, 19397, 24514, 27710, 33578, 38794, 61285, 83945, 96985, 117523, 122570, 167890, 193970, 235046, 285413, 570826, 587615, 1175230, 1427065, 1997891, 2854130, 3995782, 9989455, 19978910]

約数ペア:

[(1, 19978910), (2, 9989455), (5, 3995782), (7, 2854130), (10, 1997891), (14, 1427065), (17, 1175230), (34, 587615), (35, 570826), (70, 285413), (85, 235046), (103, 193970), (119, 167890), (163, 122570), (170, 117523), (206, 96985), (238, 83945), (326, 61285), (515, 38794), (595, 33578), (721, 27710), (815, 24514), (1030, 19397), (1141, 17510), (1190, 16789), (1442, 13855), (1630, 12257), (1751, 11410), (2282, 8755), (2771, 7210), (3502, 5705), (3605, 5542)]