31523219

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:156

約数の個数: 48

約数和(自身を含む): 43436736

約数和(自身を除く): 11913517

約数列:

[1, 7, 13, 17, 41, 49, 71, 91, 119, 221, 287, 497, 533, 637, 697, 833, 923, 1207, 1547, 2009, 2911, 3479, 3731, 4879, 6461, 8449, 9061, 10829, 15691, 20377, 26117, 34153, 37843, 45227, 49487, 59143, 63427, 109837, 142639, 264901, 346409, 443989, 643331, 768859, 1854307, 2424863, 4503317, 31523219]

約数ペア:

[(1, 31523219), (7, 4503317), (13, 2424863), (17, 1854307), (41, 768859), (49, 643331), (71, 443989), (91, 346409), (119, 264901), (221, 142639), (287, 109837), (497, 63427), (533, 59143), (637, 49487), (697, 45227), (833, 37843), (923, 34153), (1207, 26117), (1547, 20377), (2009, 15691), (2911, 10829), (3479, 9061), (3731, 8449), (4879, 6461)]