21278712

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9743}}^1$

素因数の和:9772

約数の個数: 64

約数和(自身を含む): 65479680

約数和(自身を除く): 44200968

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 52, 56, 78, 84, 91, 104, 156, 168, 182, 273, 312, 364, 546, 728, 1092, 2184, 9743, 19486, 29229, 38972, 58458, 68201, 77944, 116916, 126659, 136402, 204603, 233832, 253318, 272804, 379977, 409206, 506636, 545608, 759954, 818412, 886613, 1013272, 1519908, 1636824, 1773226, 2659839, 3039816, 3546452, 5319678, 7092904, 10639356, 21278712]

約数ペア:

[(1, 21278712), (2, 10639356), (3, 7092904), (4, 5319678), (6, 3546452), (7, 3039816), (8, 2659839), (12, 1773226), (13, 1636824), (14, 1519908), (21, 1013272), (24, 886613), (26, 818412), (28, 759954), (39, 545608), (42, 506636), (52, 409206), (56, 379977), (78, 272804), (84, 253318), (91, 233832), (104, 204603), (156, 136402), (168, 126659), (182, 116916), (273, 77944), (312, 68201), (364, 58458), (546, 38972), (728, 29229), (1092, 19486), (2184, 9743)]