21120494

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:308

約数の個数: 32

約数和(自身を含む): 34927200

約数和(自身を除く): 13806706

約数列:

[1, 2, 17, 34, 41, 82, 109, 139, 218, 278, 697, 1394, 1853, 2363, 3706, 4469, 4726, 5699, 8938, 11398, 15151, 30302, 75973, 96883, 151946, 193766, 257567, 515134, 621191, 1242382, 10560247, 21120494]

約数ペア:

[(1, 21120494), (2, 10560247), (17, 1242382), (34, 621191), (41, 515134), (82, 257567), (109, 193766), (139, 151946), (218, 96883), (278, 75973), (697, 30302), (1394, 15151), (1853, 11398), (2363, 8938), (3706, 5699), (4469, 4726)]