21748695

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{173}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 38460960

約数和(自身を除く): 16712265

約数列:

[1, 3, 5, 15, 17, 29, 51, 85, 87, 145, 173, 255, 289, 435, 493, 519, 865, 867, 1445, 1479, 2465, 2595, 2941, 4335, 5017, 7395, 8381, 8823, 14705, 15051, 25085, 25143, 41905, 44115, 49997, 75255, 85289, 125715, 149991, 249985, 255867, 426445, 749955, 1279335, 1449913, 4349739, 7249565, 21748695]

約数ペア:

[(1, 21748695), (3, 7249565), (5, 4349739), (15, 1449913), (17, 1279335), (29, 749955), (51, 426445), (85, 255867), (87, 249985), (145, 149991), (173, 125715), (255, 85289), (289, 75255), (435, 49997), (493, 44115), (519, 41905), (865, 25143), (867, 25085), (1445, 15051), (1479, 14705), (2465, 8823), (2595, 8381), (2941, 7395), (4335, 5017)]