20513792

素因数分解:

$2^{10}\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:123

約数の個数: 88

約数和(自身を含む): 46769856

約数和(自身を除く): 26256064

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 32, 46, 52, 64, 67, 92, 104, 128, 134, 184, 208, 256, 268, 299, 368, 416, 512, 536, 598, 736, 832, 871, 1024, 1072, 1196, 1472, 1541, 1664, 1742, 2144, 2392, 2944, 3082, 3328, 3484, 4288, 4784, 5888, 6164, 6656, 6968, 8576, 9568, 11776, 12328, 13312, 13936, 17152, 19136, 20033, 23552, 24656, 27872, 34304, 38272, 40066, 49312, 55744, 68608, 76544, 80132, 98624, 111488, 153088, 160264, 197248, 222976, 306176, 320528, 394496, 445952, 641056, 788992, 891904, 1282112, 1577984, 2564224, 5128448, 10256896, 20513792]

約数ペア:

[(1, 20513792), (2, 10256896), (4, 5128448), (8, 2564224), (13, 1577984), (16, 1282112), (23, 891904), (26, 788992), (32, 641056), (46, 445952), (52, 394496), (64, 320528), (67, 306176), (92, 222976), (104, 197248), (128, 160264), (134, 153088), (184, 111488), (208, 98624), (256, 80132), (268, 76544), (299, 68608), (368, 55744), (416, 49312), (512, 40066), (536, 38272), (598, 34304), (736, 27872), (832, 24656), (871, 23552), (1024, 20033), (1072, 19136), (1196, 17152), (1472, 13936), (1541, 13312), (1664, 12328), (1742, 11776), (2144, 9568), (2392, 8576), (2944, 6968), (3082, 6656), (3328, 6164), (3484, 5888), (4288, 4784)]