287807195

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{1439}}^1$

素因数の和:1655

約数の個数: 32

約数和(自身を含む): 396264960

約数和(自身を除く): 108457765

約数列:

[1, 5, 13, 17, 65, 85, 181, 221, 905, 1105, 1439, 2353, 3077, 7195, 11765, 15385, 18707, 24463, 40001, 93535, 122315, 200005, 260459, 318019, 1302295, 1590095, 3385967, 4427803, 16929835, 22139015, 57561439, 287807195]

約数ペア:

[(1, 287807195), (5, 57561439), (13, 22139015), (17, 16929835), (65, 4427803), (85, 3385967), (181, 1590095), (221, 1302295), (905, 318019), (1105, 260459), (1439, 200005), (2353, 122315), (3077, 93535), (7195, 40001), (11765, 24463), (15385, 18707)]