28147119

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{103}}^1$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 52071552

約数和(自身を除く): 23924433

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 49, 77, 91, 103, 143, 147, 169, 231, 273, 309, 429, 507, 539, 637, 721, 1001, 1133, 1183, 1339, 1617, 1859, 1911, 2163, 3003, 3399, 3549, 4017, 5047, 5577, 7007, 7931, 8281, 9373, 13013, 14729, 15141, 17407, 21021, 23793, 24843, 28119, 39039, 44187, 52221, 55517, 65611, 91091, 103103, 121849, 166551, 191477, 196833, 273273, 309309, 365547, 574431, 721721, 852943, 1340339, 2165163, 2558829, 4021017, 9382373, 28147119]

約数ペア:

[(1, 28147119), (3, 9382373), (7, 4021017), (11, 2558829), (13, 2165163), (21, 1340339), (33, 852943), (39, 721721), (49, 574431), (77, 365547), (91, 309309), (103, 273273), (143, 196833), (147, 191477), (169, 166551), (231, 121849), (273, 103103), (309, 91091), (429, 65611), (507, 55517), (539, 52221), (637, 44187), (721, 39039), (1001, 28119), (1133, 24843), (1183, 23793), (1339, 21021), (1617, 17407), (1859, 15141), (1911, 14729), (2163, 13013), (3003, 9373), (3399, 8281), (3549, 7931), (4017, 7007), (5047, 5577)]