20919206

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{233}}^1$

素因数の和:317

約数の個数: 48

約数和(自身を含む): 40334112

約数和(自身を除く): 19414906

約数列:

[1, 2, 7, 11, 14, 22, 53, 77, 106, 121, 154, 233, 242, 371, 466, 583, 742, 847, 1166, 1631, 1694, 2563, 3262, 4081, 5126, 6413, 8162, 12349, 12826, 17941, 24698, 28193, 35882, 44891, 56386, 86443, 89782, 135839, 172886, 197351, 271678, 394702, 950873, 1494229, 1901746, 2988458, 10459603, 20919206]

約数ペア:

[(1, 20919206), (2, 10459603), (7, 2988458), (11, 1901746), (14, 1494229), (22, 950873), (53, 394702), (77, 271678), (106, 197351), (121, 172886), (154, 135839), (233, 89782), (242, 86443), (371, 56386), (466, 44891), (583, 35882), (742, 28193), (847, 24698), (1166, 17941), (1631, 12826), (1694, 12349), (2563, 8162), (3262, 6413), (4081, 5126)]