21019168

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{191}}^1$

素因数の和:401

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 23010272

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 181, 191, 304, 362, 382, 608, 724, 764, 1448, 1528, 2896, 3056, 3439, 3629, 5792, 6112, 6878, 7258, 13756, 14516, 27512, 29032, 34571, 55024, 58064, 69142, 110048, 116128, 138284, 276568, 553136, 656849, 1106272, 1313698, 2627396, 5254792, 10509584, 21019168]

約数ペア:

[(1, 21019168), (2, 10509584), (4, 5254792), (8, 2627396), (16, 1313698), (19, 1106272), (32, 656849), (38, 553136), (76, 276568), (152, 138284), (181, 116128), (191, 110048), (304, 69142), (362, 58064), (382, 55024), (608, 34571), (724, 29032), (764, 27512), (1448, 14516), (1528, 13756), (2896, 7258), (3056, 6878), (3439, 6112), (3629, 5792)]