21508864

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{281}}^1$

素因数の和:333

約数の個数: 72

約数和(自身を含む): 48418272

約数和(自身を除く): 26909408

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 32, 46, 52, 64, 92, 104, 128, 184, 208, 256, 281, 299, 368, 416, 562, 598, 736, 832, 1124, 1196, 1472, 1664, 2248, 2392, 2944, 3328, 3653, 4496, 4784, 5888, 6463, 7306, 8992, 9568, 12926, 14612, 17984, 19136, 25852, 29224, 35968, 38272, 51704, 58448, 71936, 76544, 84019, 103408, 116896, 168038, 206816, 233792, 336076, 413632, 467584, 672152, 827264, 935168, 1344304, 1654528, 2688608, 5377216, 10754432, 21508864]

約数ペア:

[(1, 21508864), (2, 10754432), (4, 5377216), (8, 2688608), (13, 1654528), (16, 1344304), (23, 935168), (26, 827264), (32, 672152), (46, 467584), (52, 413632), (64, 336076), (92, 233792), (104, 206816), (128, 168038), (184, 116896), (208, 103408), (256, 84019), (281, 76544), (299, 71936), (368, 58448), (416, 51704), (562, 38272), (598, 35968), (736, 29224), (832, 25852), (1124, 19136), (1196, 17984), (1472, 14612), (1664, 12926), (2248, 9568), (2392, 8992), (2944, 7306), (3328, 6463), (3653, 5888), (4496, 4784)]