215355575

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{727}}^1$

素因数の和:812

約数の個数: 36

約数和(自身を含む): 290991792

約数和(自身を除く): 75636217

約数列:

[1, 5, 17, 25, 41, 85, 205, 289, 425, 697, 727, 1025, 1445, 3485, 3635, 7225, 11849, 12359, 17425, 18175, 29807, 59245, 61795, 149035, 210103, 296225, 308975, 506719, 745175, 1050515, 2533595, 5252575, 8614223, 12667975, 43071115, 215355575]

約数ペア:

[(1, 215355575), (5, 43071115), (17, 12667975), (25, 8614223), (41, 5252575), (85, 2533595), (205, 1050515), (289, 745175), (425, 506719), (697, 308975), (727, 296225), (1025, 210103), (1445, 149035), (3485, 61795), (3635, 59245), (7225, 29807), (11849, 18175), (12359, 17425)]