18742496

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:363

約数の個数: 48

約数和(自身を含む): 38619504

約数和(自身を除く): 19877008

約数列:

[1, 2, 4, 8, 16, 32, 43, 53, 86, 106, 172, 212, 257, 344, 424, 514, 688, 848, 1028, 1376, 1696, 2056, 2279, 4112, 4558, 8224, 9116, 11051, 13621, 18232, 22102, 27242, 36464, 44204, 54484, 72928, 88408, 108968, 176816, 217936, 353632, 435872, 585703, 1171406, 2342812, 4685624, 9371248, 18742496]

約数ペア:

[(1, 18742496), (2, 9371248), (4, 4685624), (8, 2342812), (16, 1171406), (32, 585703), (43, 435872), (53, 353632), (86, 217936), (106, 176816), (172, 108968), (212, 88408), (257, 72928), (344, 54484), (424, 44204), (514, 36464), (688, 27242), (848, 22102), (1028, 18232), (1376, 13621), (1696, 11051), (2056, 9116), (2279, 8224), (4112, 4558)]