28399221

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:514

約数の個数: 32

約数和(自身を含む): 43866240

約数和(自身を除く): 15467019

約数列:

[1, 3, 9, 27, 43, 61, 129, 183, 387, 401, 549, 1161, 1203, 1647, 2623, 3609, 7869, 10827, 17243, 23607, 24461, 51729, 70821, 73383, 155187, 220149, 465561, 660447, 1051823, 3155469, 9466407, 28399221]

約数ペア:

[(1, 28399221), (3, 9466407), (9, 3155469), (27, 1051823), (43, 660447), (61, 465561), (129, 220149), (183, 155187), (387, 73383), (401, 70821), (549, 51729), (1161, 24461), (1203, 23607), (1647, 17243), (2623, 10827), (3609, 7869)]