648910227

素因数分解:

$3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{283}}^1\times {\mathrm{797}}^1$

素因数の和:1227

約数の個数: 32

約数和(自身を含む): 1000806912

約数和(自身を除く): 351896685

約数列:

[1, 3, 7, 21, 137, 283, 411, 797, 849, 959, 1981, 2391, 2877, 5579, 5943, 16737, 38771, 109189, 116313, 225551, 271397, 327567, 676653, 764323, 814191, 1578857, 2292969, 4736571, 30900487, 92701461, 216303409, 648910227]

約数ペア:

[(1, 648910227), (3, 216303409), (7, 92701461), (21, 30900487), (137, 4736571), (283, 2292969), (411, 1578857), (797, 814191), (849, 764323), (959, 676653), (1981, 327567), (2391, 271397), (2877, 225551), (5579, 116313), (5943, 109189), (16737, 38771)]