19979168

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{269}}^1$

素因数の和:501

約数の個数: 48

約数和(自身を含む): 43273440

約数和(自身を除く): 23294272

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 176, 211, 269, 352, 422, 538, 844, 1076, 1688, 2152, 2321, 2959, 3376, 4304, 4642, 5918, 6752, 8608, 9284, 11836, 18568, 23672, 37136, 47344, 56759, 74272, 94688, 113518, 227036, 454072, 624349, 908144, 1248698, 1816288, 2497396, 4994792, 9989584, 19979168]

約数ペア:

[(1, 19979168), (2, 9989584), (4, 4994792), (8, 2497396), (11, 1816288), (16, 1248698), (22, 908144), (32, 624349), (44, 454072), (88, 227036), (176, 113518), (211, 94688), (269, 74272), (352, 56759), (422, 47344), (538, 37136), (844, 23672), (1076, 18568), (1688, 11836), (2152, 9284), (2321, 8608), (2959, 6752), (3376, 5918), (4304, 4642)]