20956845

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1181}}^1$

素因数の和:1222

約数の個数: 48

約数和(自身を含む): 41530752

約数和(自身を除く): 20573907

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 169, 195, 273, 455, 507, 845, 1181, 1183, 1365, 2535, 3543, 3549, 5905, 5915, 8267, 15353, 17715, 17745, 24801, 41335, 46059, 76765, 107471, 124005, 199589, 230295, 322413, 537355, 598767, 997945, 1397123, 1612065, 2993835, 4191369, 6985615, 20956845]

約数ペア:

[(1, 20956845), (3, 6985615), (5, 4191369), (7, 2993835), (13, 1612065), (15, 1397123), (21, 997945), (35, 598767), (39, 537355), (65, 322413), (91, 230295), (105, 199589), (169, 124005), (195, 107471), (273, 76765), (455, 46059), (507, 41335), (845, 24801), (1181, 17745), (1183, 17715), (1365, 15353), (2535, 8267), (3543, 5915), (3549, 5905)]