21644792

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2851}}^1$

素因数の和:2943

約数の個数: 32

約数和(自身を含む): 44320080

約数和(自身を除く): 22675288

約数列:

[1, 2, 4, 8, 13, 26, 52, 73, 104, 146, 292, 584, 949, 1898, 2851, 3796, 5702, 7592, 11404, 22808, 37063, 74126, 148252, 208123, 296504, 416246, 832492, 1664984, 2705599, 5411198, 10822396, 21644792]

約数ペア:

[(1, 21644792), (2, 10822396), (4, 5411198), (8, 2705599), (13, 1664984), (26, 832492), (52, 416246), (73, 296504), (104, 208123), (146, 148252), (292, 74126), (584, 37063), (949, 22808), (1898, 11404), (2851, 7592), (3796, 5702)]