19980212

素因数分解:

$2^2\times 7^1\times {\mathrm{541}}^1\times {\mathrm{1319}}^1$

素因数の和:1871

約数の個数: 24

約数和(自身を含む): 40064640

約数和(自身を除く): 20084428

約数列:

[1, 2, 4, 7, 14, 28, 541, 1082, 1319, 2164, 2638, 3787, 5276, 7574, 9233, 15148, 18466, 36932, 713579, 1427158, 2854316, 4995053, 9990106, 19980212]

約数ペア:

[(1, 19980212), (2, 9990106), (4, 4995053), (7, 2854316), (14, 1427158), (28, 713579), (541, 36932), (1082, 18466), (1319, 15148), (2164, 9233), (2638, 7574), (3787, 5276)]