6400720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{4211}}^1$

素因数の和:4243

約数の個数: 40

約数和(自身を含む): 15668640

約数和(自身を除く): 9267920

約数列:

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

約数ペア:

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