20791701

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4783}}^1$

素因数の和:4822

約数の個数: 32

約数和(自身を含む): 36741120

約数和(自身を除く): 15949419

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 161, 189, 207, 483, 621, 1449, 4347, 4783, 14349, 33481, 43047, 100443, 110009, 129141, 301329, 330027, 770063, 903987, 990081, 2310189, 2970243, 6930567, 20791701]

約数ペア:

[(1, 20791701), (3, 6930567), (7, 2970243), (9, 2310189), (21, 990081), (23, 903987), (27, 770063), (63, 330027), (69, 301329), (161, 129141), (189, 110009), (207, 100443), (483, 43047), (621, 33481), (1449, 14349), (4347, 4783)]