18899072

素因数分解:

$2^7\times {\mathrm{19}}^2\times {\mathrm{409}}^1$

素因数の和:461

約数の個数: 48

約数和(自身を含む): 39833550

約数和(自身を除く): 20934478

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 304, 361, 409, 608, 722, 818, 1216, 1444, 1636, 2432, 2888, 3272, 5776, 6544, 7771, 11552, 13088, 15542, 23104, 26176, 31084, 46208, 52352, 62168, 124336, 147649, 248672, 295298, 497344, 590596, 994688, 1181192, 2362384, 4724768, 9449536, 18899072]

約数ペア:

[(1, 18899072), (2, 9449536), (4, 4724768), (8, 2362384), (16, 1181192), (19, 994688), (32, 590596), (38, 497344), (64, 295298), (76, 248672), (128, 147649), (152, 124336), (304, 62168), (361, 52352), (409, 46208), (608, 31084), (722, 26176), (818, 23104), (1216, 15542), (1444, 13088), (1636, 11552), (2432, 7771), (2888, 6544), (3272, 5776)]