21261568

素因数分解:

$2^8\times {\mathrm{23}}^2\times {\mathrm{157}}^1$

素因数の和:219

約数の個数: 54

約数和(自身を含む): 44648114

約数和(自身を除く): 23386546

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 64, 92, 128, 157, 184, 256, 314, 368, 529, 628, 736, 1058, 1256, 1472, 2116, 2512, 2944, 3611, 4232, 5024, 5888, 7222, 8464, 10048, 14444, 16928, 20096, 28888, 33856, 40192, 57776, 67712, 83053, 115552, 135424, 166106, 231104, 332212, 462208, 664424, 924416, 1328848, 2657696, 5315392, 10630784, 21261568]

約数ペア:

[(1, 21261568), (2, 10630784), (4, 5315392), (8, 2657696), (16, 1328848), (23, 924416), (32, 664424), (46, 462208), (64, 332212), (92, 231104), (128, 166106), (157, 135424), (184, 115552), (256, 83053), (314, 67712), (368, 57776), (529, 40192), (628, 33856), (736, 28888), (1058, 20096), (1256, 16928), (1472, 14444), (2116, 10048), (2512, 8464), (2944, 7222), (3611, 5888), (4232, 5024)]