21469384

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{449}}^1$

素因数の和:637

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 20110616

約数列:

[1, 2, 4, 8, 43, 86, 139, 172, 278, 344, 449, 556, 898, 1112, 1796, 3592, 5977, 11954, 19307, 23908, 38614, 47816, 62411, 77228, 124822, 154456, 249644, 499288, 2683673, 5367346, 10734692, 21469384]

約数ペア:

[(1, 21469384), (2, 10734692), (4, 5367346), (8, 2683673), (43, 499288), (86, 249644), (139, 154456), (172, 124822), (278, 77228), (344, 62411), (449, 47816), (556, 38614), (898, 23908), (1112, 19307), (1796, 11954), (3592, 5977)]