21289164

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{571}}^1$

素因数の和:830

約数の個数: 48

約数和(自身を含む): 53813760

約数和(自身を除く): 32524596

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 239, 478, 571, 717, 956, 1142, 1434, 1713, 2284, 2868, 3107, 3426, 6214, 6852, 7423, 9321, 12428, 14846, 18642, 22269, 29692, 37284, 44538, 89076, 136469, 272938, 409407, 545876, 818814, 1637628, 1774097, 3548194, 5322291, 7096388, 10644582, 21289164]

約数ペア:

[(1, 21289164), (2, 10644582), (3, 7096388), (4, 5322291), (6, 3548194), (12, 1774097), (13, 1637628), (26, 818814), (39, 545876), (52, 409407), (78, 272938), (156, 136469), (239, 89076), (478, 44538), (571, 37284), (717, 29692), (956, 22269), (1142, 18642), (1434, 14846), (1713, 12428), (2284, 9321), (2868, 7423), (3107, 6852), (3426, 6214)]