28181556

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{60217}}^1$

素因数の和:60240

約数の個数: 36

約数和(自身を含む): 76717732

約数和(自身を除く): 48536176

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 60217, 120434, 180651, 240868, 361302, 541953, 722604, 782821, 1083906, 1565642, 2167812, 2348463, 3131284, 4696926, 7045389, 9393852, 14090778, 28181556]

約数ペア:

[(1, 28181556), (2, 14090778), (3, 9393852), (4, 7045389), (6, 4696926), (9, 3131284), (12, 2348463), (13, 2167812), (18, 1565642), (26, 1083906), (36, 782821), (39, 722604), (52, 541953), (78, 361302), (117, 240868), (156, 180651), (234, 120434), (468, 60217)]