21428226

素因数分解:

$2^1\times 3^8\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:120

約数の個数: 72

約数和(自身を含む): 51015744

約数和(自身を除く): 29587518

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 71, 81, 138, 142, 162, 207, 213, 243, 414, 426, 486, 621, 639, 729, 1242, 1278, 1458, 1633, 1863, 1917, 2187, 3266, 3726, 3834, 4374, 4899, 5589, 5751, 6561, 9798, 11178, 11502, 13122, 14697, 16767, 17253, 29394, 33534, 34506, 44091, 50301, 51759, 88182, 100602, 103518, 132273, 150903, 155277, 264546, 301806, 310554, 396819, 465831, 793638, 931662, 1190457, 2380914, 3571371, 7142742, 10714113, 21428226]

約数ペア:

[(1, 21428226), (2, 10714113), (3, 7142742), (6, 3571371), (9, 2380914), (18, 1190457), (23, 931662), (27, 793638), (46, 465831), (54, 396819), (69, 310554), (71, 301806), (81, 264546), (138, 155277), (142, 150903), (162, 132273), (207, 103518), (213, 100602), (243, 88182), (414, 51759), (426, 50301), (486, 44091), (621, 34506), (639, 33534), (729, 29394), (1242, 17253), (1278, 16767), (1458, 14697), (1633, 13122), (1863, 11502), (1917, 11178), (2187, 9798), (3266, 6561), (3726, 5751), (3834, 5589), (4374, 4899)]