21018698

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{8707}}^1$

素因数の和:8797

約数の個数: 16

約数和(自身を含む): 33856704

約数和(自身を除く): 12838006

約数列:

[1, 2, 17, 34, 71, 142, 1207, 2414, 8707, 17414, 148019, 296038, 618197, 1236394, 10509349, 21018698]

約数ペア:

[(1, 21018698), (2, 10509349), (17, 1236394), (34, 618197), (71, 296038), (142, 148019), (1207, 17414), (2414, 8707)]