20049664

素因数分解:

$2^8\times {\mathrm{17}}^2\times {\mathrm{271}}^1$

素因数の和:321

約数の個数: 54

約数和(自身を含む): 42670544

約数和(自身を除く): 22620880

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 256, 271, 272, 289, 542, 544, 578, 1084, 1088, 1156, 2168, 2176, 2312, 4336, 4352, 4607, 4624, 8672, 9214, 9248, 17344, 18428, 18496, 34688, 36856, 36992, 69376, 73712, 73984, 78319, 147424, 156638, 294848, 313276, 589696, 626552, 1179392, 1253104, 2506208, 5012416, 10024832, 20049664]

約数ペア:

[(1, 20049664), (2, 10024832), (4, 5012416), (8, 2506208), (16, 1253104), (17, 1179392), (32, 626552), (34, 589696), (64, 313276), (68, 294848), (128, 156638), (136, 147424), (256, 78319), (271, 73984), (272, 73712), (289, 69376), (542, 36992), (544, 36856), (578, 34688), (1084, 18496), (1088, 18428), (1156, 17344), (2168, 9248), (2176, 9214), (2312, 8672), (4336, 4624), (4352, 4607)]