21027720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25033}}^1$

素因数の和:25054

約数の個数: 64

約数和(自身を含む): 72097920

約数和(自身を除く): 51070200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25033, 50066, 75099, 100132, 125165, 150198, 175231, 200264, 250330, 300396, 350462, 375495, 500660, 525693, 600792, 700924, 750990, 876155, 1001320, 1051386, 1401848, 1501980, 1752310, 2102772, 2628465, 3003960, 3504620, 4205544, 5256930, 7009240, 10513860, 21027720]

約数ペア:

[(1, 21027720), (2, 10513860), (3, 7009240), (4, 5256930), (5, 4205544), (6, 3504620), (7, 3003960), (8, 2628465), (10, 2102772), (12, 1752310), (14, 1501980), (15, 1401848), (20, 1051386), (21, 1001320), (24, 876155), (28, 750990), (30, 700924), (35, 600792), (40, 525693), (42, 500660), (56, 375495), (60, 350462), (70, 300396), (84, 250330), (105, 200264), (120, 175231), (140, 150198), (168, 125165), (210, 100132), (280, 75099), (420, 50066), (840, 25033)]