21710955

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{12163}}^1$

素因数の和:12195

約数の個数: 32

約数和(自身を含む): 42038784

約数和(自身を除く): 20327829

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 12163, 36489, 60815, 85141, 182445, 206771, 255423, 425705, 620313, 1033855, 1277115, 1447397, 3101565, 4342191, 7236985, 21710955]

約数ペア:

[(1, 21710955), (3, 7236985), (5, 4342191), (7, 3101565), (15, 1447397), (17, 1277115), (21, 1033855), (35, 620313), (51, 425705), (85, 255423), (105, 206771), (119, 182445), (255, 85141), (357, 60815), (595, 36489), (1785, 12163)]