211373407

素因数分解:

$7^3\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:348

約数の個数: 32

約数和(自身を含む): 258252800

約数和(自身を除く): 46879393

約数列:

[1, 7, 31, 49, 103, 193, 217, 343, 721, 1351, 1519, 3193, 5047, 5983, 9457, 10633, 19879, 22351, 35329, 41881, 66199, 139153, 156457, 293167, 616249, 974071, 1095199, 2052169, 4313743, 6818497, 30196201, 211373407]

約数ペア:

[(1, 211373407), (7, 30196201), (31, 6818497), (49, 4313743), (103, 2052169), (193, 1095199), (217, 974071), (343, 616249), (721, 293167), (1351, 156457), (1519, 139153), (3193, 66199), (5047, 41881), (5983, 35329), (9457, 22351), (10633, 19879)]