21289788

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{45491}}^1$

素因数の和:45514

約数の個数: 36

約数和(自身を含む): 57956808

約数和(自身を除く): 36667020

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 45491, 90982, 136473, 181964, 272946, 409419, 545892, 591383, 818838, 1182766, 1637676, 1774149, 2365532, 3548298, 5322447, 7096596, 10644894, 21289788]

約数ペア:

[(1, 21289788), (2, 10644894), (3, 7096596), (4, 5322447), (6, 3548298), (9, 2365532), (12, 1774149), (13, 1637676), (18, 1182766), (26, 818838), (36, 591383), (39, 545892), (52, 409419), (78, 272946), (117, 181964), (156, 136473), (234, 90982), (468, 45491)]