20955844175

素因数分解:

$5^2\times 7^1\times {\mathrm{47}}^2\times {\mathrm{151}}^1\times {\mathrm{359}}^1$

素因数の和:621

約数の個数: 72

約数和(自身を含む): 30628753920

約数和(自身を除く): 9672909745

約数列:

[1, 5, 7, 25, 35, 47, 151, 175, 235, 329, 359, 755, 1057, 1175, 1645, 1795, 2209, 2513, 3775, 5285, 7097, 8225, 8975, 11045, 12565, 15463, 16873, 26425, 35485, 49679, 54209, 55225, 62825, 77315, 84365, 118111, 177425, 248395, 271045, 333559, 379463, 386575, 421825, 590555, 793031, 1241975, 1355225, 1667795, 1897315, 2334913, 2547823, 2952775, 3965155, 5551217, 8338975, 9486575, 11674565, 12739115, 17834761, 19825775, 27756085, 58372825, 63695575, 89173805, 119747681, 138780425, 445869025, 598738405, 838233767, 2993692025, 4191168835, 20955844175]

約数ペア:

[(1, 20955844175), (5, 4191168835), (7, 2993692025), (25, 838233767), (35, 598738405), (47, 445869025), (151, 138780425), (175, 119747681), (235, 89173805), (329, 63695575), (359, 58372825), (755, 27756085), (1057, 19825775), (1175, 17834761), (1645, 12739115), (1795, 11674565), (2209, 9486575), (2513, 8338975), (3775, 5551217), (5285, 3965155), (7097, 2952775), (8225, 2547823), (8975, 2334913), (11045, 1897315), (12565, 1667795), (15463, 1355225), (16873, 1241975), (26425, 793031), (35485, 590555), (49679, 421825), (54209, 386575), (55225, 379463), (62825, 333559), (77315, 271045), (84365, 248395), (118111, 177425)]