215877025

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3061}}^1$

素因数の和:3122

約数の個数: 48

約数和(自身を含む): 340200448

約数和(自身を除く): 124323423

約数列:

[1, 5, 7, 13, 25, 31, 35, 65, 91, 155, 175, 217, 325, 403, 455, 775, 1085, 2015, 2275, 2821, 3061, 5425, 10075, 14105, 15305, 21427, 39793, 70525, 76525, 94891, 107135, 198965, 278551, 474455, 535675, 664237, 994825, 1233583, 1392755, 2372275, 3321185, 6167915, 6963775, 8635081, 16605925, 30839575, 43175405, 215877025]

約数ペア:

[(1, 215877025), (5, 43175405), (7, 30839575), (13, 16605925), (25, 8635081), (31, 6963775), (35, 6167915), (65, 3321185), (91, 2372275), (155, 1392755), (175, 1233583), (217, 994825), (325, 664237), (403, 535675), (455, 474455), (775, 278551), (1085, 198965), (2015, 107135), (2275, 94891), (2821, 76525), (3061, 70525), (5425, 39793), (10075, 21427), (14105, 15305)]