21994240

素因数分解:

$2^8\times 5^1\times {\mathrm{17183}}^1$

素因数の和:17204

約数の個数: 36

約数和(自身を含む): 52686144

約数和(自身を除く): 30691904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 17183, 34366, 68732, 85915, 137464, 171830, 274928, 343660, 549856, 687320, 1099712, 1374640, 2199424, 2749280, 4398848, 5498560, 10997120, 21994240]

約数ペア:

[(1, 21994240), (2, 10997120), (4, 5498560), (5, 4398848), (8, 2749280), (10, 2199424), (16, 1374640), (20, 1099712), (32, 687320), (40, 549856), (64, 343660), (80, 274928), (128, 171830), (160, 137464), (256, 85915), (320, 68732), (640, 34366), (1280, 17183)]