20789504

素因数分解:

$2^8\times {\mathrm{17}}^2\times {\mathrm{281}}^1$

素因数の和:331

約数の個数: 54

約数和(自身を含む): 44239314

約数和(自身を除く): 23449810

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 256, 272, 281, 289, 544, 562, 578, 1088, 1124, 1156, 2176, 2248, 2312, 4352, 4496, 4624, 4777, 8992, 9248, 9554, 17984, 18496, 19108, 35968, 36992, 38216, 71936, 73984, 76432, 81209, 152864, 162418, 305728, 324836, 611456, 649672, 1222912, 1299344, 2598688, 5197376, 10394752, 20789504]

約数ペア:

[(1, 20789504), (2, 10394752), (4, 5197376), (8, 2598688), (16, 1299344), (17, 1222912), (32, 649672), (34, 611456), (64, 324836), (68, 305728), (128, 162418), (136, 152864), (256, 81209), (272, 76432), (281, 73984), (289, 71936), (544, 38216), (562, 36992), (578, 35968), (1088, 19108), (1124, 18496), (1156, 17984), (2176, 9554), (2248, 9248), (2312, 8992), (4352, 4777), (4496, 4624)]