21521235

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2281}}^1$

素因数の和:2343

約数の個数: 32

約数和(自身を含む): 37461312

約数和(自身を除く): 15940077

約数列:

[1, 3, 5, 15, 17, 37, 51, 85, 111, 185, 255, 555, 629, 1887, 2281, 3145, 6843, 9435, 11405, 34215, 38777, 84397, 116331, 193885, 253191, 421985, 581655, 1265955, 1434749, 4304247, 7173745, 21521235]

約数ペア:

[(1, 21521235), (3, 7173745), (5, 4304247), (15, 1434749), (17, 1265955), (37, 581655), (51, 421985), (85, 253191), (111, 193885), (185, 116331), (255, 84397), (555, 38777), (629, 34215), (1887, 11405), (2281, 9435), (3145, 6843)]