20121591

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{359}}^1$

素因数の和:543

約数の個数: 32

約数和(自身を含む): 32762880

約数和(自身を除く): 12641289

約数列:

[1, 3, 7, 17, 21, 51, 119, 157, 357, 359, 471, 1077, 1099, 2513, 2669, 3297, 6103, 7539, 8007, 18309, 18683, 42721, 56049, 56363, 128163, 169089, 394541, 958171, 1183623, 2874513, 6707197, 20121591]

約数ペア:

[(1, 20121591), (3, 6707197), (7, 2874513), (17, 1183623), (21, 958171), (51, 394541), (119, 169089), (157, 128163), (357, 56363), (359, 56049), (471, 42721), (1077, 18683), (1099, 18309), (2513, 8007), (2669, 7539), (3297, 6103)]