388293855

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{293}}^1\times {\mathrm{5197}}^1$

素因数の和:5515

約数の個数: 32

約数和(自身を含む): 660187584

約数和(自身を除く): 271893729

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 293, 879, 1465, 4395, 4981, 5197, 14943, 15591, 24905, 25985, 74715, 77955, 88349, 265047, 441745, 1325235, 1522721, 4568163, 7613605, 22840815, 25886257, 77658771, 129431285, 388293855]

約数ペア:

[(1, 388293855), (3, 129431285), (5, 77658771), (15, 25886257), (17, 22840815), (51, 7613605), (85, 4568163), (255, 1522721), (293, 1325235), (879, 441745), (1465, 265047), (4395, 88349), (4981, 77955), (5197, 74715), (14943, 25985), (15591, 24905)]