21438976

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{3221}}^1$

素因数の和:3252

約数の個数: 40

約数和(自身を含む): 46145484

約数和(自身を除く): 24706508

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1664, 3221, 3328, 6442, 6656, 12884, 25768, 41873, 51536, 83746, 103072, 167492, 206144, 334984, 412288, 669968, 824576, 1339936, 1649152, 2679872, 5359744, 10719488, 21438976]

約数ペア:

[(1, 21438976), (2, 10719488), (4, 5359744), (8, 2679872), (13, 1649152), (16, 1339936), (26, 824576), (32, 669968), (52, 412288), (64, 334984), (104, 206144), (128, 167492), (208, 103072), (256, 83746), (416, 51536), (512, 41873), (832, 25768), (1664, 12884), (3221, 6656), (3328, 6442)]