21739168

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{409}}^1$

素因数の和:581

約数の個数: 48

約数和(自身を含む): 47113920

約数和(自身を除く): 25374752

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 151, 176, 302, 352, 409, 604, 818, 1208, 1636, 1661, 2416, 3272, 3322, 4499, 4832, 6544, 6644, 8998, 13088, 13288, 17996, 26576, 35992, 53152, 61759, 71984, 123518, 143968, 247036, 494072, 679349, 988144, 1358698, 1976288, 2717396, 5434792, 10869584, 21739168]

約数ペア:

[(1, 21739168), (2, 10869584), (4, 5434792), (8, 2717396), (11, 1976288), (16, 1358698), (22, 988144), (32, 679349), (44, 494072), (88, 247036), (151, 143968), (176, 123518), (302, 71984), (352, 61759), (409, 53152), (604, 35992), (818, 26576), (1208, 17996), (1636, 13288), (1661, 13088), (2416, 8998), (3272, 6644), (3322, 6544), (4499, 4832)]