28239393

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 47667840

約数和(自身を除く): 19428447

約数列:

[1, 3, 7, 13, 21, 39, 73, 91, 109, 169, 219, 273, 327, 507, 511, 763, 949, 1183, 1417, 1533, 2289, 2847, 3549, 4251, 6643, 7957, 9919, 12337, 18421, 19929, 23871, 29757, 37011, 55263, 55699, 86359, 103441, 128947, 167097, 259077, 310323, 386841, 724087, 1344733, 2172261, 4034199, 9413131, 28239393]

約数ペア:

[(1, 28239393), (3, 9413131), (7, 4034199), (13, 2172261), (21, 1344733), (39, 724087), (73, 386841), (91, 310323), (109, 259077), (169, 167097), (219, 128947), (273, 103441), (327, 86359), (507, 55699), (511, 55263), (763, 37011), (949, 29757), (1183, 23871), (1417, 19929), (1533, 18421), (2289, 12337), (2847, 9919), (3549, 7957), (4251, 6643)]