21712356

素因数分解:

$2^2\times 3^2\times {\mathrm{139}}^1\times {\mathrm{4339}}^1$

素因数の和:4488

約数の個数: 36

約数和(自身を含む): 55291600

約数和(自身を除く): 33579244

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 139, 278, 417, 556, 834, 1251, 1668, 2502, 4339, 5004, 8678, 13017, 17356, 26034, 39051, 52068, 78102, 156204, 603121, 1206242, 1809363, 2412484, 3618726, 5428089, 7237452, 10856178, 21712356]

約数ペア:

[(1, 21712356), (2, 10856178), (3, 7237452), (4, 5428089), (6, 3618726), (9, 2412484), (12, 1809363), (18, 1206242), (36, 603121), (139, 156204), (278, 78102), (417, 52068), (556, 39051), (834, 26034), (1251, 17356), (1668, 13017), (2502, 8678), (4339, 5004)]