18796928

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 40392000

約数和(自身を除く): 21595072

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 59, 64, 76, 118, 128, 131, 152, 236, 262, 304, 472, 524, 608, 944, 1048, 1121, 1216, 1888, 2096, 2242, 2432, 2489, 3776, 4192, 4484, 4978, 7552, 7729, 8384, 8968, 9956, 15458, 16768, 17936, 19912, 30916, 35872, 39824, 61832, 71744, 79648, 123664, 143488, 146851, 159296, 247328, 293702, 318592, 494656, 587404, 989312, 1174808, 2349616, 4699232, 9398464, 18796928]

約数ペア:

[(1, 18796928), (2, 9398464), (4, 4699232), (8, 2349616), (16, 1174808), (19, 989312), (32, 587404), (38, 494656), (59, 318592), (64, 293702), (76, 247328), (118, 159296), (128, 146851), (131, 143488), (152, 123664), (236, 79648), (262, 71744), (304, 61832), (472, 39824), (524, 35872), (608, 30916), (944, 19912), (1048, 17936), (1121, 16768), (1216, 15458), (1888, 9956), (2096, 8968), (2242, 8384), (2432, 7729), (2489, 7552), (3776, 4978), (4192, 4484)]