20687219

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1427}}^1$

素因数の和:1562

約数の個数: 16

約数和(自身を含む): 25132800

約数和(自身を除く): 4445581

約数列:

[1, 7, 19, 109, 133, 763, 1427, 2071, 9989, 14497, 27113, 155543, 189791, 1088801, 2955317, 20687219]

約数ペア:

[(1, 20687219), (7, 2955317), (19, 1088801), (109, 189791), (133, 155543), (763, 27113), (1427, 14497), (2071, 9989)]