20637747

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 34245120

約数和(自身を除く): 13607373

約数列:

[1, 3, 9, 13, 27, 39, 47, 81, 117, 139, 141, 243, 351, 417, 423, 611, 1053, 1251, 1269, 1807, 1833, 3159, 3753, 3807, 5421, 5499, 6533, 11259, 11421, 16263, 16497, 19599, 33777, 48789, 49491, 58797, 84929, 146367, 148473, 176391, 254787, 439101, 529173, 764361, 1587519, 2293083, 6879249, 20637747]

約数ペア:

[(1, 20637747), (3, 6879249), (9, 2293083), (13, 1587519), (27, 764361), (39, 529173), (47, 439101), (81, 254787), (117, 176391), (139, 148473), (141, 146367), (243, 84929), (351, 58797), (417, 49491), (423, 48789), (611, 33777), (1053, 19599), (1251, 16497), (1269, 16263), (1807, 11421), (1833, 11259), (3159, 6533), (3753, 5499), (3807, 5421)]