18727984

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{1097}}^1$

素因数の和:1213

約数の個数: 40

約数和(自身を含む): 40028688

約数和(自身を除く): 21300704

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 97, 176, 194, 388, 776, 1067, 1097, 1552, 2134, 2194, 4268, 4388, 8536, 8776, 12067, 17072, 17552, 24134, 48268, 96536, 106409, 193072, 212818, 425636, 851272, 1170499, 1702544, 2340998, 4681996, 9363992, 18727984]

約数ペア:

[(1, 18727984), (2, 9363992), (4, 4681996), (8, 2340998), (11, 1702544), (16, 1170499), (22, 851272), (44, 425636), (88, 212818), (97, 193072), (176, 106409), (194, 96536), (388, 48268), (776, 24134), (1067, 17552), (1097, 17072), (1552, 12067), (2134, 8776), (2194, 8536), (4268, 4388)]