21346645

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:285

約数の個数: 32

約数和(自身を含む): 28926720

約数和(自身を除く): 7580075

約数列:

[1, 5, 17, 23, 61, 85, 115, 179, 305, 391, 895, 1037, 1403, 1955, 3043, 4117, 5185, 7015, 10919, 15215, 20585, 23851, 54595, 69989, 119255, 185623, 251137, 349945, 928115, 1255685, 4269329, 21346645]

約数ペア:

[(1, 21346645), (5, 4269329), (17, 1255685), (23, 928115), (61, 349945), (85, 251137), (115, 185623), (179, 119255), (305, 69989), (391, 54595), (895, 23851), (1037, 20585), (1403, 15215), (1955, 10919), (3043, 7015), (4117, 5185)]