18875168

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{157}}^1$

素因数の和:214

約数の個数: 72

約数和(自身を含む): 42782292

約数和(自身を除く): 23907124

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 68, 104, 136, 157, 208, 221, 272, 289, 314, 416, 442, 544, 578, 628, 884, 1156, 1256, 1768, 2041, 2312, 2512, 2669, 3536, 3757, 4082, 4624, 5024, 5338, 7072, 7514, 8164, 9248, 10676, 15028, 16328, 21352, 30056, 32656, 34697, 42704, 45373, 60112, 65312, 69394, 85408, 90746, 120224, 138788, 181492, 277576, 362984, 555152, 589849, 725968, 1110304, 1179698, 1451936, 2359396, 4718792, 9437584, 18875168]

約数ペア:

[(1, 18875168), (2, 9437584), (4, 4718792), (8, 2359396), (13, 1451936), (16, 1179698), (17, 1110304), (26, 725968), (32, 589849), (34, 555152), (52, 362984), (68, 277576), (104, 181492), (136, 138788), (157, 120224), (208, 90746), (221, 85408), (272, 69394), (289, 65312), (314, 60112), (416, 45373), (442, 42704), (544, 34697), (578, 32656), (628, 30056), (884, 21352), (1156, 16328), (1256, 15028), (1768, 10676), (2041, 9248), (2312, 8164), (2512, 7514), (2669, 7072), (3536, 5338), (3757, 5024), (4082, 4624)]