21033180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16693}}^1$

素因数の和:16715

約数の個数: 72

約数和(自身を含む): 72919392

約数和(自身を除く): 51886212

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16693, 33386, 50079, 66772, 83465, 100158, 116851, 150237, 166930, 200316, 233702, 250395, 300474, 333860, 350553, 467404, 500790, 584255, 600948, 701106, 751185, 1001580, 1051659, 1168510, 1402212, 1502370, 1752765, 2103318, 2337020, 3004740, 3505530, 4206636, 5258295, 7011060, 10516590, 21033180]

約数ペア:

[(1, 21033180), (2, 10516590), (3, 7011060), (4, 5258295), (5, 4206636), (6, 3505530), (7, 3004740), (9, 2337020), (10, 2103318), (12, 1752765), (14, 1502370), (15, 1402212), (18, 1168510), (20, 1051659), (21, 1001580), (28, 751185), (30, 701106), (35, 600948), (36, 584255), (42, 500790), (45, 467404), (60, 350553), (63, 333860), (70, 300474), (84, 250395), (90, 233702), (105, 200316), (126, 166930), (140, 150237), (180, 116851), (210, 100158), (252, 83465), (315, 66772), (420, 50079), (630, 33386), (1260, 16693)]