19798324

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{499}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 43120000

約数和(自身を除く): 23321676

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 109, 182, 218, 364, 436, 499, 763, 998, 1417, 1526, 1996, 2834, 3052, 3493, 5668, 6487, 6986, 9919, 12974, 13972, 19838, 25948, 39676, 45409, 54391, 90818, 108782, 181636, 217564, 380737, 707083, 761474, 1414166, 1522948, 2828332, 4949581, 9899162, 19798324]

約数ペア:

[(1, 19798324), (2, 9899162), (4, 4949581), (7, 2828332), (13, 1522948), (14, 1414166), (26, 761474), (28, 707083), (52, 380737), (91, 217564), (109, 181636), (182, 108782), (218, 90818), (364, 54391), (436, 45409), (499, 39676), (763, 25948), (998, 19838), (1417, 13972), (1526, 12974), (1996, 9919), (2834, 6986), (3052, 6487), (3493, 5668)]