19985031

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{6961}}^1$

素因数の和:7007

約数の個数: 24

約数和(自身を含む): 32582160

約数和(自身を除く): 12597129

約数列:

[1, 3, 9, 11, 29, 33, 87, 99, 261, 319, 957, 2871, 6961, 20883, 62649, 76571, 201869, 229713, 605607, 689139, 1816821, 2220559, 6661677, 19985031]

約数ペア:

[(1, 19985031), (3, 6661677), (9, 2220559), (11, 1816821), (29, 689139), (33, 605607), (87, 229713), (99, 201869), (261, 76571), (319, 62649), (957, 20883), (2871, 6961)]