12801440

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{4211}}^1$

素因数の和:4245

約数の個数: 48

約数和(自身を含む): 31842720

約数和(自身を除く): 19041280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 4211, 8422, 16844, 21055, 33688, 42110, 67376, 80009, 84220, 134752, 160018, 168440, 320036, 336880, 400045, 640072, 673760, 800090, 1280144, 1600180, 2560288, 3200360, 6400720, 12801440]

約数ペア:

[(1, 12801440), (2, 6400720), (4, 3200360), (5, 2560288), (8, 1600180), (10, 1280144), (16, 800090), (19, 673760), (20, 640072), (32, 400045), (38, 336880), (40, 320036), (76, 168440), (80, 160018), (95, 134752), (152, 84220), (160, 80009), (190, 67376), (304, 42110), (380, 33688), (608, 21055), (760, 16844), (1520, 8422), (3040, 4211)]