20809088

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:235

約数の個数: 64

約数和(自身を含む): 44835120

約数和(自身を除く): 24026032

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 73, 128, 131, 136, 146, 262, 272, 292, 524, 544, 584, 1048, 1088, 1168, 1241, 2096, 2176, 2227, 2336, 2482, 4192, 4454, 4672, 4964, 8384, 8908, 9344, 9563, 9928, 16768, 17816, 19126, 19856, 35632, 38252, 39712, 71264, 76504, 79424, 142528, 153008, 158848, 162571, 285056, 306016, 325142, 612032, 650284, 1224064, 1300568, 2601136, 5202272, 10404544, 20809088]

約数ペア:

[(1, 20809088), (2, 10404544), (4, 5202272), (8, 2601136), (16, 1300568), (17, 1224064), (32, 650284), (34, 612032), (64, 325142), (68, 306016), (73, 285056), (128, 162571), (131, 158848), (136, 153008), (146, 142528), (262, 79424), (272, 76504), (292, 71264), (524, 39712), (544, 38252), (584, 35632), (1048, 19856), (1088, 19126), (1168, 17816), (1241, 16768), (2096, 9928), (2176, 9563), (2227, 9344), (2336, 8908), (2482, 8384), (4192, 4964), (4454, 4672)]