21401820

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1201}}^1$

素因数の和:1233

約数の個数: 120

約数和(自身を含む): 73302768

約数和(自身を除く): 51900948

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 44, 45, 54, 55, 60, 66, 81, 90, 99, 108, 110, 132, 135, 162, 165, 180, 198, 220, 270, 297, 324, 330, 396, 405, 495, 540, 594, 660, 810, 891, 990, 1188, 1201, 1485, 1620, 1782, 1980, 2402, 2970, 3564, 3603, 4455, 4804, 5940, 6005, 7206, 8910, 10809, 12010, 13211, 14412, 17820, 18015, 21618, 24020, 26422, 32427, 36030, 39633, 43236, 52844, 54045, 64854, 66055, 72060, 79266, 97281, 108090, 118899, 129708, 132110, 158532, 162135, 194562, 198165, 216180, 237798, 264220, 324270, 356697, 389124, 396330, 475596, 486405, 594495, 648540, 713394, 792660, 972810, 1070091, 1188990, 1426788, 1783485, 1945620, 2140182, 2377980, 3566970, 4280364, 5350455, 7133940, 10700910, 21401820]

約数ペア:

[(1, 21401820), (2, 10700910), (3, 7133940), (4, 5350455), (5, 4280364), (6, 3566970), (9, 2377980), (10, 2140182), (11, 1945620), (12, 1783485), (15, 1426788), (18, 1188990), (20, 1070091), (22, 972810), (27, 792660), (30, 713394), (33, 648540), (36, 594495), (44, 486405), (45, 475596), (54, 396330), (55, 389124), (60, 356697), (66, 324270), (81, 264220), (90, 237798), (99, 216180), (108, 198165), (110, 194562), (132, 162135), (135, 158532), (162, 132110), (165, 129708), (180, 118899), (198, 108090), (220, 97281), (270, 79266), (297, 72060), (324, 66055), (330, 64854), (396, 54045), (405, 52844), (495, 43236), (540, 39633), (594, 36030), (660, 32427), (810, 26422), (891, 24020), (990, 21618), (1188, 18015), (1201, 17820), (1485, 14412), (1620, 13211), (1782, 12010), (1980, 10809), (2402, 8910), (2970, 7206), (3564, 6005), (3603, 5940), (4455, 4804)]