20279805

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{179}}^1$

素因数の和:290

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 20362755

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 83, 91, 105, 179, 195, 249, 273, 415, 455, 537, 581, 895, 1079, 1245, 1253, 1365, 1743, 2327, 2685, 2905, 3237, 3759, 5395, 6265, 6981, 7553, 8715, 11635, 14857, 16185, 16289, 18795, 22659, 34905, 37765, 44571, 48867, 74285, 81445, 103999, 113295, 193141, 222855, 244335, 311997, 519995, 579423, 965705, 1351987, 1559985, 2897115, 4055961, 6759935, 20279805]

約数ペア:

[(1, 20279805), (3, 6759935), (5, 4055961), (7, 2897115), (13, 1559985), (15, 1351987), (21, 965705), (35, 579423), (39, 519995), (65, 311997), (83, 244335), (91, 222855), (105, 193141), (179, 113295), (195, 103999), (249, 81445), (273, 74285), (415, 48867), (455, 44571), (537, 37765), (581, 34905), (895, 22659), (1079, 18795), (1245, 16289), (1253, 16185), (1365, 14857), (1743, 11635), (2327, 8715), (2685, 7553), (2905, 6981), (3237, 6265), (3759, 5395)]