19954688

素因数分解:

$2^{10}\times {\mathrm{13}}^1\times {\mathrm{1499}}^1$

素因数の和:1532

約数の個数: 44

約数和(自身を含む): 42987000

約数和(自身を除く): 23032312

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1024, 1499, 1664, 2998, 3328, 5996, 6656, 11992, 13312, 19487, 23984, 38974, 47968, 77948, 95936, 155896, 191872, 311792, 383744, 623584, 767488, 1247168, 1534976, 2494336, 4988672, 9977344, 19954688]

約数ペア:

[(1, 19954688), (2, 9977344), (4, 4988672), (8, 2494336), (13, 1534976), (16, 1247168), (26, 767488), (32, 623584), (52, 383744), (64, 311792), (104, 191872), (128, 155896), (208, 95936), (256, 77948), (416, 47968), (512, 38974), (832, 23984), (1024, 19487), (1499, 13312), (1664, 11992), (2998, 6656), (3328, 5996)]