21542542

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{743}}^1$

素因数の和:880

約数の個数: 32

約数和(自身を含む): 39283200

約数和(自身を除く): 17740658

約数列:

[1, 2, 7, 14, 19, 38, 109, 133, 218, 266, 743, 763, 1486, 1526, 2071, 4142, 5201, 10402, 14117, 14497, 28234, 28994, 80987, 98819, 161974, 197638, 566909, 1133818, 1538753, 3077506, 10771271, 21542542]

約数ペア:

[(1, 21542542), (2, 10771271), (7, 3077506), (14, 1538753), (19, 1133818), (38, 566909), (109, 197638), (133, 161974), (218, 98819), (266, 80987), (743, 28994), (763, 28234), (1486, 14497), (1526, 14117), (2071, 10402), (4142, 5201)]