21972687

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{739}}^1$

素因数の和:823

約数の個数: 32

約数和(自身を含む): 34525440

約数和(自身を除く): 12552753

約数列:

[1, 3, 11, 17, 33, 51, 53, 159, 187, 561, 583, 739, 901, 1749, 2217, 2703, 8129, 9911, 12563, 24387, 29733, 37689, 39167, 117501, 138193, 414579, 430837, 665839, 1292511, 1997517, 7324229, 21972687]

約数ペア:

[(1, 21972687), (3, 7324229), (11, 1997517), (17, 1292511), (33, 665839), (51, 430837), (53, 414579), (159, 138193), (187, 117501), (561, 39167), (583, 37689), (739, 29733), (901, 24387), (1749, 12563), (2217, 9911), (2703, 8129)]