20312006

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:165

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 18395194

約数列:

[1, 2, 11, 13, 22, 26, 29, 31, 58, 62, 79, 143, 158, 286, 319, 341, 377, 403, 638, 682, 754, 806, 869, 899, 1027, 1738, 1798, 2054, 2291, 2449, 4147, 4433, 4582, 4898, 8294, 8866, 9889, 11297, 11687, 19778, 22594, 23374, 25201, 26939, 29783, 31837, 50402, 53878, 59566, 63674, 71021, 128557, 142042, 257114, 327613, 350207, 655226, 700414, 781231, 923273, 1562462, 1846546, 10156003, 20312006]

約数ペア:

[(1, 20312006), (2, 10156003), (11, 1846546), (13, 1562462), (22, 923273), (26, 781231), (29, 700414), (31, 655226), (58, 350207), (62, 327613), (79, 257114), (143, 142042), (158, 128557), (286, 71021), (319, 63674), (341, 59566), (377, 53878), (403, 50402), (638, 31837), (682, 29783), (754, 26939), (806, 25201), (869, 23374), (899, 22594), (1027, 19778), (1738, 11687), (1798, 11297), (2054, 9889), (2291, 8866), (2449, 8294), (4147, 4898), (4433, 4582)]