19992604

素因数分解:

$2^2\times {\mathrm{89}}^2\times {\mathrm{631}}^1$

素因数の和:813

約数の個数: 18

約数和(自身を含む): 35440664

約数和(自身を除く): 15448060

約数列:

[1, 2, 4, 89, 178, 356, 631, 1262, 2524, 7921, 15842, 31684, 56159, 112318, 224636, 4998151, 9996302, 19992604]

約数ペア:

[(1, 19992604), (2, 9996302), (4, 4998151), (89, 224636), (178, 112318), (356, 56159), (631, 31684), (1262, 15842), (2524, 7921)]