20191171105

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{353}}^1\times {\mathrm{367}}^1$

素因数の和:866

約数の個数: 64

約数和(自身を含む): 28689020928

約数和(自身を除く): 8497849823

約数列:

[1, 5, 7, 35, 61, 73, 305, 353, 365, 367, 427, 511, 1765, 1835, 2135, 2471, 2555, 2569, 4453, 12355, 12845, 21533, 22265, 22387, 25769, 26791, 31171, 107665, 111935, 128845, 129551, 133955, 150731, 155855, 156709, 180383, 187537, 647755, 753655, 783545, 901915, 906857, 937685, 1571909, 1634251, 4534285, 7859545, 7902611, 8171255, 9457223, 11003363, 11439757, 39513055, 47286115, 55016815, 55318277, 57198785, 66200561, 276591385, 331002805, 576890603, 2884453015, 4038234221, 20191171105]

約数ペア:

[(1, 20191171105), (5, 4038234221), (7, 2884453015), (35, 576890603), (61, 331002805), (73, 276591385), (305, 66200561), (353, 57198785), (365, 55318277), (367, 55016815), (427, 47286115), (511, 39513055), (1765, 11439757), (1835, 11003363), (2135, 9457223), (2471, 8171255), (2555, 7902611), (2569, 7859545), (4453, 4534285), (12355, 1634251), (12845, 1571909), (21533, 937685), (22265, 906857), (22387, 901915), (25769, 783545), (26791, 753655), (31171, 647755), (107665, 187537), (111935, 180383), (128845, 156709), (129551, 155855), (133955, 150731)]