20526080

素因数分解:

$2^{10}\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:255

約数の個数: 88

約数和(自身を含む): 52075680

約数和(自身を除く): 31549600

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 211, 256, 304, 320, 380, 422, 512, 608, 640, 760, 844, 1024, 1055, 1216, 1280, 1520, 1688, 2110, 2432, 2560, 3040, 3376, 4009, 4220, 4864, 5120, 6080, 6752, 8018, 8440, 9728, 12160, 13504, 16036, 16880, 19456, 20045, 24320, 27008, 32072, 33760, 40090, 48640, 54016, 64144, 67520, 80180, 97280, 108032, 128288, 135040, 160360, 216064, 256576, 270080, 320720, 513152, 540160, 641440, 1026304, 1080320, 1282880, 2052608, 2565760, 4105216, 5131520, 10263040, 20526080]

約数ペア:

[(1, 20526080), (2, 10263040), (4, 5131520), (5, 4105216), (8, 2565760), (10, 2052608), (16, 1282880), (19, 1080320), (20, 1026304), (32, 641440), (38, 540160), (40, 513152), (64, 320720), (76, 270080), (80, 256576), (95, 216064), (128, 160360), (152, 135040), (160, 128288), (190, 108032), (211, 97280), (256, 80180), (304, 67520), (320, 64144), (380, 54016), (422, 48640), (512, 40090), (608, 33760), (640, 32072), (760, 27008), (844, 24320), (1024, 20045), (1055, 19456), (1216, 16880), (1280, 16036), (1520, 13504), (1688, 12160), (2110, 9728), (2432, 8440), (2560, 8018), (3040, 6752), (3376, 6080), (4009, 5120), (4220, 4864)]