64474461

素因数分解:

$3^5\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 101582208

約数和(自身を除く): 37107747

約数列:

[1, 3, 9, 27, 37, 71, 81, 101, 111, 213, 243, 303, 333, 639, 909, 999, 1917, 2627, 2727, 2997, 3737, 5751, 7171, 7881, 8181, 8991, 11211, 17253, 21513, 23643, 24543, 33633, 64539, 70929, 100899, 193617, 212787, 265327, 302697, 580851, 638361, 795981, 908091, 1742553, 2387943, 7163829, 21491487, 64474461]

約数ペア:

[(1, 64474461), (3, 21491487), (9, 7163829), (27, 2387943), (37, 1742553), (71, 908091), (81, 795981), (101, 638361), (111, 580851), (213, 302697), (243, 265327), (303, 212787), (333, 193617), (639, 100899), (909, 70929), (999, 64539), (1917, 33633), (2627, 24543), (2727, 23643), (2997, 21513), (3737, 17253), (5751, 11211), (7171, 8991), (7881, 8181)]