20115745

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 27417600

約数和(自身を除く): 7301855

約数列:

[1, 5, 13, 31, 65, 67, 149, 155, 335, 403, 745, 871, 1937, 2015, 2077, 4355, 4619, 9685, 9983, 10385, 23095, 27001, 49915, 60047, 129779, 135005, 300235, 309473, 648895, 1547365, 4023149, 20115745]

約数ペア:

[(1, 20115745), (5, 4023149), (13, 1547365), (31, 648895), (65, 309473), (67, 300235), (149, 135005), (155, 129779), (335, 60047), (403, 49915), (745, 27001), (871, 23095), (1937, 10385), (2015, 9983), (2077, 9685), (4355, 4619)]