209997685

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:585

約数の個数: 32

約数和(自身を含む): 274562784

約数和(自身を除く): 64565099

約数列:

[1, 5, 17, 61, 85, 101, 305, 401, 505, 1037, 1717, 2005, 5185, 6161, 6817, 8585, 24461, 30805, 34085, 40501, 104737, 122305, 202505, 415837, 523685, 688517, 2079185, 2470561, 3442585, 12352805, 41999537, 209997685]

約数ペア:

[(1, 209997685), (5, 41999537), (17, 12352805), (61, 3442585), (85, 2470561), (101, 2079185), (305, 688517), (401, 523685), (505, 415837), (1037, 202505), (1717, 122305), (2005, 104737), (5185, 40501), (6161, 34085), (6817, 30805), (8585, 24461)]