19920404

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 41247360

約数和(自身を除く): 21326956

約数列:

[1, 2, 4, 7, 14, 28, 61, 107, 109, 122, 214, 218, 244, 427, 428, 436, 749, 763, 854, 1498, 1526, 1708, 2996, 3052, 6527, 6649, 11663, 13054, 13298, 23326, 26108, 26596, 45689, 46543, 46652, 81641, 91378, 93086, 163282, 182756, 186172, 326564, 711443, 1422886, 2845772, 4980101, 9960202, 19920404]

約数ペア:

[(1, 19920404), (2, 9960202), (4, 4980101), (7, 2845772), (14, 1422886), (28, 711443), (61, 326564), (107, 186172), (109, 182756), (122, 163282), (214, 93086), (218, 91378), (244, 81641), (427, 46652), (428, 46543), (436, 45689), (749, 26596), (763, 26108), (854, 23326), (1498, 13298), (1526, 13054), (1708, 11663), (2996, 6649), (3052, 6527)]