21605974

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{659}}^1$

素因数の和:784

約数の個数: 24

約数和(自身を含む): 35509320

約数和(自身を除く): 13903346

約数列:

[1, 2, 13, 26, 97, 169, 194, 338, 659, 1261, 1318, 2522, 8567, 16393, 17134, 32786, 63923, 111371, 127846, 222742, 830999, 1661998, 10802987, 21605974]

約数ペア:

[(1, 21605974), (2, 10802987), (13, 1661998), (26, 830999), (97, 222742), (169, 127846), (194, 111371), (338, 63923), (659, 32786), (1261, 17134), (1318, 16393), (2522, 8567)]