20709138

素因数分解:

$2^1\times 3^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1\times {\mathrm{281}}^1$

素因数の和:530

約数の個数: 32

約数和(自身を含む): 42394752

約数和(自身を除く): 21685614

約数列:

[1, 2, 3, 6, 71, 142, 173, 213, 281, 346, 426, 519, 562, 843, 1038, 1686, 12283, 19951, 24566, 36849, 39902, 48613, 59853, 73698, 97226, 119706, 145839, 291678, 3451523, 6903046, 10354569, 20709138]

約数ペア:

[(1, 20709138), (2, 10354569), (3, 6903046), (6, 3451523), (71, 291678), (142, 145839), (173, 119706), (213, 97226), (281, 73698), (346, 59853), (426, 48613), (519, 39902), (562, 36849), (843, 24566), (1038, 19951), (1686, 12283)]