20445040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3319}}^1$

素因数の和:3350

約数の個数: 80

約数和(自身を含む): 59281920

約数和(自身を除く): 38836880

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3319, 6160, 6638, 13276, 16595, 23233, 26552, 33190, 36509, 46466, 53104, 66380, 73018, 92932, 116165, 132760, 146036, 182545, 185864, 232330, 255563, 265520, 292072, 365090, 371728, 464660, 511126, 584144, 730180, 929320, 1022252, 1277815, 1460360, 1858640, 2044504, 2555630, 2920720, 4089008, 5111260, 10222520, 20445040]

約数ペア:

[(1, 20445040), (2, 10222520), (4, 5111260), (5, 4089008), (7, 2920720), (8, 2555630), (10, 2044504), (11, 1858640), (14, 1460360), (16, 1277815), (20, 1022252), (22, 929320), (28, 730180), (35, 584144), (40, 511126), (44, 464660), (55, 371728), (56, 365090), (70, 292072), (77, 265520), (80, 255563), (88, 232330), (110, 185864), (112, 182545), (140, 146036), (154, 132760), (176, 116165), (220, 92932), (280, 73018), (308, 66380), (385, 53104), (440, 46466), (560, 36509), (616, 33190), (770, 26552), (880, 23233), (1232, 16595), (1540, 13276), (3080, 6638), (3319, 6160)]