21920080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3011}}^1$

素因数の和:3044

約数の個数: 80

約数和(自身を含む): 62745984

約数和(自身を除く): 40825904

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 3011, 3640, 6022, 7280, 12044, 15055, 21077, 24088, 30110, 39143, 42154, 48176, 60220, 78286, 84308, 105385, 120440, 156572, 168616, 195715, 210770, 240880, 274001, 313144, 337232, 391430, 421540, 548002, 626288, 782860, 843080, 1096004, 1370005, 1565720, 1686160, 2192008, 2740010, 3131440, 4384016, 5480020, 10960040, 21920080]

約数ペア:

[(1, 21920080), (2, 10960040), (4, 5480020), (5, 4384016), (7, 3131440), (8, 2740010), (10, 2192008), (13, 1686160), (14, 1565720), (16, 1370005), (20, 1096004), (26, 843080), (28, 782860), (35, 626288), (40, 548002), (52, 421540), (56, 391430), (65, 337232), (70, 313144), (80, 274001), (91, 240880), (104, 210770), (112, 195715), (130, 168616), (140, 156572), (182, 120440), (208, 105385), (260, 84308), (280, 78286), (364, 60220), (455, 48176), (520, 42154), (560, 39143), (728, 30110), (910, 24088), (1040, 21077), (1456, 15055), (1820, 12044), (3011, 7280), (3640, 6022)]