21609280

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{877}}^1$

素因数の和:912

約数の個数: 112

約数和(自身を含む): 64227456

約数和(自身を除く): 42618176

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 64, 70, 77, 80, 88, 110, 112, 140, 154, 160, 176, 220, 224, 280, 308, 320, 352, 385, 440, 448, 560, 616, 704, 770, 877, 880, 1120, 1232, 1540, 1754, 1760, 2240, 2464, 3080, 3508, 3520, 4385, 4928, 6139, 6160, 7016, 8770, 9647, 12278, 12320, 14032, 17540, 19294, 24556, 24640, 28064, 30695, 35080, 38588, 48235, 49112, 56128, 61390, 67529, 70160, 77176, 96470, 98224, 122780, 135058, 140320, 154352, 192940, 196448, 245560, 270116, 280640, 308704, 337645, 385880, 392896, 491120, 540232, 617408, 675290, 771760, 982240, 1080464, 1350580, 1543520, 1964480, 2160928, 2701160, 3087040, 4321856, 5402320, 10804640, 21609280]

約数ペア:

[(1, 21609280), (2, 10804640), (4, 5402320), (5, 4321856), (7, 3087040), (8, 2701160), (10, 2160928), (11, 1964480), (14, 1543520), (16, 1350580), (20, 1080464), (22, 982240), (28, 771760), (32, 675290), (35, 617408), (40, 540232), (44, 491120), (55, 392896), (56, 385880), (64, 337645), (70, 308704), (77, 280640), (80, 270116), (88, 245560), (110, 196448), (112, 192940), (140, 154352), (154, 140320), (160, 135058), (176, 122780), (220, 98224), (224, 96470), (280, 77176), (308, 70160), (320, 67529), (352, 61390), (385, 56128), (440, 49112), (448, 48235), (560, 38588), (616, 35080), (704, 30695), (770, 28064), (877, 24640), (880, 24556), (1120, 19294), (1232, 17540), (1540, 14032), (1754, 12320), (1760, 12278), (2240, 9647), (2464, 8770), (3080, 7016), (3508, 6160), (3520, 6139), (4385, 4928)]