208954809

素因数分解:

$3^4\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7841}}^1$

素因数の和:7907

約数の個数: 40

約数和(自身を含む): 364370688

約数和(自身を除く): 155415879

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 81, 141, 189, 329, 423, 567, 987, 1269, 2961, 3807, 7841, 8883, 23523, 26649, 54887, 70569, 164661, 211707, 368527, 493983, 635121, 1105581, 1481949, 2579689, 3316743, 4445847, 7739067, 9950229, 23217201, 29850687, 69651603, 208954809]

約数ペア:

[(1, 208954809), (3, 69651603), (7, 29850687), (9, 23217201), (21, 9950229), (27, 7739067), (47, 4445847), (63, 3316743), (81, 2579689), (141, 1481949), (189, 1105581), (329, 635121), (423, 493983), (567, 368527), (987, 211707), (1269, 164661), (2961, 70569), (3807, 54887), (7841, 26649), (8883, 23523)]