21497726440

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^2\times {\mathrm{293}}^1\times {\mathrm{653}}^1$

素因数の和:1063

約数の個数: 96

約数和(自身を含む): 49543756920

約数和(自身を除く): 28046030480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 293, 424, 530, 586, 653, 1060, 1172, 1306, 1465, 2120, 2344, 2612, 2809, 2930, 3265, 5224, 5618, 5860, 6530, 11236, 11720, 13060, 14045, 15529, 22472, 26120, 28090, 31058, 34609, 56180, 62116, 69218, 77645, 112360, 124232, 138436, 155290, 173045, 191329, 276872, 310580, 346090, 382658, 621160, 692180, 765316, 823037, 956645, 1384360, 1530632, 1646074, 1834277, 1913290, 3292148, 3668554, 3826580, 4115185, 6584296, 7337108, 7653160, 8230370, 9171385, 10140437, 14674216, 16460740, 18342770, 20280874, 32921480, 36685540, 40561748, 50702185, 73371080, 81123496, 101404370, 202808740, 405617480, 537443161, 1074886322, 2149772644, 2687215805, 4299545288, 5374431610, 10748863220, 21497726440]

約数ペア:

[(1, 21497726440), (2, 10748863220), (4, 5374431610), (5, 4299545288), (8, 2687215805), (10, 2149772644), (20, 1074886322), (40, 537443161), (53, 405617480), (106, 202808740), (212, 101404370), (265, 81123496), (293, 73371080), (424, 50702185), (530, 40561748), (586, 36685540), (653, 32921480), (1060, 20280874), (1172, 18342770), (1306, 16460740), (1465, 14674216), (2120, 10140437), (2344, 9171385), (2612, 8230370), (2809, 7653160), (2930, 7337108), (3265, 6584296), (5224, 4115185), (5618, 3826580), (5860, 3668554), (6530, 3292148), (11236, 1913290), (11720, 1834277), (13060, 1646074), (14045, 1530632), (15529, 1384360), (22472, 956645), (26120, 823037), (28090, 765316), (31058, 692180), (34609, 621160), (56180, 382658), (62116, 346090), (69218, 310580), (77645, 276872), (112360, 191329), (124232, 173045), (138436, 155290)]