209920215

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^2\times {\mathrm{3761}}^1$

素因数の和:3891

約数の個数: 24

約数和(自身を含む): 341559504

約数和(自身を除く): 131639289

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 3721, 3761, 11163, 11283, 18605, 18805, 55815, 56415, 229421, 688263, 1147105, 3441315, 13994681, 41984043, 69973405, 209920215]

約数ペア:

[(1, 209920215), (3, 69973405), (5, 41984043), (15, 13994681), (61, 3441315), (183, 1147105), (305, 688263), (915, 229421), (3721, 56415), (3761, 55815), (11163, 18805), (11283, 18605)]