21491028

素因数分解:

$2^2\times 3^3\times {\mathrm{13}}^1\times {\mathrm{15307}}^1$

素因数の和:15333

約数の個数: 48

約数和(自身を含む): 60007360

約数和(自身を除く): 38516332

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 108, 117, 156, 234, 351, 468, 702, 1404, 15307, 30614, 45921, 61228, 91842, 137763, 183684, 198991, 275526, 397982, 413289, 551052, 596973, 795964, 826578, 1193946, 1653156, 1790919, 2387892, 3581838, 5372757, 7163676, 10745514, 21491028]

約数ペア:

[(1, 21491028), (2, 10745514), (3, 7163676), (4, 5372757), (6, 3581838), (9, 2387892), (12, 1790919), (13, 1653156), (18, 1193946), (26, 826578), (27, 795964), (36, 596973), (39, 551052), (52, 413289), (54, 397982), (78, 275526), (108, 198991), (117, 183684), (156, 137763), (234, 91842), (351, 61228), (468, 45921), (702, 30614), (1404, 15307)]