31220007

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2$

素因数の和:109

約数の個数: 72

約数和(自身を含む): 57053808

約数和(自身を除く): 25833801

約数列:

[1, 3, 7, 13, 17, 21, 31, 39, 49, 51, 91, 93, 119, 147, 217, 221, 273, 357, 403, 527, 637, 651, 663, 833, 961, 1209, 1519, 1547, 1581, 1911, 2499, 2821, 2883, 3689, 4557, 4641, 6727, 6851, 8463, 10829, 11067, 12493, 16337, 19747, 20181, 20553, 25823, 32487, 37479, 47089, 47957, 49011, 59241, 77469, 87451, 114359, 141267, 143871, 212381, 262353, 335699, 343077, 612157, 637143, 800513, 1007097, 1486667, 1836471, 2401539, 4460001, 10406669, 31220007]

約数ペア:

[(1, 31220007), (3, 10406669), (7, 4460001), (13, 2401539), (17, 1836471), (21, 1486667), (31, 1007097), (39, 800513), (49, 637143), (51, 612157), (91, 343077), (93, 335699), (119, 262353), (147, 212381), (217, 143871), (221, 141267), (273, 114359), (357, 87451), (403, 77469), (527, 59241), (637, 49011), (651, 47957), (663, 47089), (833, 37479), (961, 32487), (1209, 25823), (1519, 20553), (1547, 20181), (1581, 19747), (1911, 16337), (2499, 12493), (2821, 11067), (2883, 10829), (3689, 8463), (4557, 6851), (4641, 6727)]