21103445

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 29082240

約数和(自身を除く): 7978795

約数列:

[1, 5, 11, 29, 55, 101, 131, 145, 319, 505, 655, 1111, 1441, 1595, 2929, 3799, 5555, 7205, 13231, 14645, 18995, 32219, 41789, 66155, 145541, 161095, 208945, 383699, 727705, 1918495, 4220689, 21103445]

約数ペア:

[(1, 21103445), (5, 4220689), (11, 1918495), (29, 727705), (55, 383699), (101, 208945), (131, 161095), (145, 145541), (319, 66155), (505, 41789), (655, 32219), (1111, 18995), (1441, 14645), (1595, 13231), (2929, 7205), (3799, 5555)]