21989136

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{269}}^1$

素因数の和:424

約数の個数: 80

約数和(自身を含む): 61871040

約数和(自身を除く): 39881904

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 131, 156, 208, 262, 269, 312, 393, 524, 538, 624, 786, 807, 1048, 1076, 1572, 1614, 1703, 2096, 2152, 3144, 3228, 3406, 3497, 4304, 5109, 6288, 6456, 6812, 6994, 10218, 10491, 12912, 13624, 13988, 20436, 20982, 27248, 27976, 35239, 40872, 41964, 55952, 70478, 81744, 83928, 105717, 140956, 167856, 211434, 281912, 422868, 458107, 563824, 845736, 916214, 1374321, 1691472, 1832428, 2748642, 3664856, 5497284, 7329712, 10994568, 21989136]

約数ペア:

[(1, 21989136), (2, 10994568), (3, 7329712), (4, 5497284), (6, 3664856), (8, 2748642), (12, 1832428), (13, 1691472), (16, 1374321), (24, 916214), (26, 845736), (39, 563824), (48, 458107), (52, 422868), (78, 281912), (104, 211434), (131, 167856), (156, 140956), (208, 105717), (262, 83928), (269, 81744), (312, 70478), (393, 55952), (524, 41964), (538, 40872), (624, 35239), (786, 27976), (807, 27248), (1048, 20982), (1076, 20436), (1572, 13988), (1614, 13624), (1703, 12912), (2096, 10491), (2152, 10218), (3144, 6994), (3228, 6812), (3406, 6456), (3497, 6288), (4304, 5109)]