20509300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{353}}^1$

素因数の和:457

約数の個数: 72

約数和(自身を含む): 51621696

約数和(自身を除く): 31112396

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 83, 100, 140, 166, 175, 332, 350, 353, 415, 581, 700, 706, 830, 1162, 1412, 1660, 1765, 2075, 2324, 2471, 2905, 3530, 4150, 4942, 5810, 7060, 8300, 8825, 9884, 11620, 12355, 14525, 17650, 24710, 29050, 29299, 35300, 49420, 58100, 58598, 61775, 117196, 123550, 146495, 205093, 247100, 292990, 410186, 585980, 732475, 820372, 1025465, 1464950, 2050930, 2929900, 4101860, 5127325, 10254650, 20509300]

約数ペア:

[(1, 20509300), (2, 10254650), (4, 5127325), (5, 4101860), (7, 2929900), (10, 2050930), (14, 1464950), (20, 1025465), (25, 820372), (28, 732475), (35, 585980), (50, 410186), (70, 292990), (83, 247100), (100, 205093), (140, 146495), (166, 123550), (175, 117196), (332, 61775), (350, 58598), (353, 58100), (415, 49420), (581, 35300), (700, 29299), (706, 29050), (830, 24710), (1162, 17650), (1412, 14525), (1660, 12355), (1765, 11620), (2075, 9884), (2324, 8825), (2471, 8300), (2905, 7060), (3530, 5810), (4150, 4942)]