21278034

素因数分解:

$2^1\times 3^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{743}}^1$

素因数の和:831

約数の個数: 48

約数和(自身を含む): 48514752

約数和(自身を除く): 27236718

約数列:

[1, 2, 3, 6, 9, 18, 37, 43, 74, 86, 111, 129, 222, 258, 333, 387, 666, 743, 774, 1486, 1591, 2229, 3182, 4458, 4773, 6687, 9546, 13374, 14319, 27491, 28638, 31949, 54982, 63898, 82473, 95847, 164946, 191694, 247419, 287541, 494838, 575082, 1182113, 2364226, 3546339, 7092678, 10639017, 21278034]

約数ペア:

[(1, 21278034), (2, 10639017), (3, 7092678), (6, 3546339), (9, 2364226), (18, 1182113), (37, 575082), (43, 494838), (74, 287541), (86, 247419), (111, 191694), (129, 164946), (222, 95847), (258, 82473), (333, 63898), (387, 54982), (666, 31949), (743, 28638), (774, 27491), (1486, 14319), (1591, 13374), (2229, 9546), (3182, 6687), (4458, 4773)]