21921440

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{7211}}^1$

素因数の和:7245

約数の個数: 48

約数和(自身を含む): 54522720

約数和(自身を除く): 32601280

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, 7211, 14422, 28844, 36055, 57688, 72110, 115376, 137009, 144220, 230752, 274018, 288440, 548036, 576880, 685045, 1096072, 1153760, 1370090, 2192144, 2740180, 4384288, 5480360, 10960720, 21921440]

約数ペア:

[(1, 21921440), (2, 10960720), (4, 5480360), (5, 4384288), (8, 2740180), (10, 2192144), (16, 1370090), (19, 1153760), (20, 1096072), (32, 685045), (38, 576880), (40, 548036), (76, 288440), (80, 274018), (95, 230752), (152, 144220), (160, 137009), (190, 115376), (304, 72110), (380, 57688), (608, 36055), (760, 28844), (1520, 14422), (3040, 7211)]