21702275

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 33212160

約数和(自身を除く): 11509885

約数列:

[1, 5, 7, 19, 25, 35, 61, 95, 107, 133, 175, 305, 427, 475, 535, 665, 749, 1159, 1525, 2033, 2135, 2675, 3325, 3745, 5795, 6527, 8113, 10165, 10675, 14231, 18725, 28975, 32635, 40565, 45689, 50825, 71155, 124013, 163175, 202825, 228445, 355775, 620065, 868091, 1142225, 3100325, 4340455, 21702275]

約数ペア:

[(1, 21702275), (5, 4340455), (7, 3100325), (19, 1142225), (25, 868091), (35, 620065), (61, 355775), (95, 228445), (107, 202825), (133, 163175), (175, 124013), (305, 71155), (427, 50825), (475, 45689), (535, 40565), (665, 32635), (749, 28975), (1159, 18725), (1525, 14231), (2033, 10675), (2135, 10165), (2675, 8113), (3325, 6527), (3745, 5795)]