21753920

素因数分解:

$2^6\times 5^1\times {\mathrm{157}}^1\times {\mathrm{433}}^1$

素因数の和:607

約数の個数: 56

約数和(自身を含む): 52251864

約数和(自身を除く): 30497944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 157, 160, 314, 320, 433, 628, 785, 866, 1256, 1570, 1732, 2165, 2512, 3140, 3464, 4330, 5024, 6280, 6928, 8660, 10048, 12560, 13856, 17320, 25120, 27712, 34640, 50240, 67981, 69280, 135962, 138560, 271924, 339905, 543848, 679810, 1087696, 1359620, 2175392, 2719240, 4350784, 5438480, 10876960, 21753920]

約数ペア:

[(1, 21753920), (2, 10876960), (4, 5438480), (5, 4350784), (8, 2719240), (10, 2175392), (16, 1359620), (20, 1087696), (32, 679810), (40, 543848), (64, 339905), (80, 271924), (157, 138560), (160, 135962), (314, 69280), (320, 67981), (433, 50240), (628, 34640), (785, 27712), (866, 25120), (1256, 17320), (1570, 13856), (1732, 12560), (2165, 10048), (2512, 8660), (3140, 6928), (3464, 6280), (4330, 5024)]