20589608

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 42503580

約数和(自身を除く): 21913972

約数列:

[1, 2, 4, 8, 13, 26, 52, 97, 104, 157, 169, 194, 314, 338, 388, 628, 676, 776, 1256, 1261, 1352, 2041, 2522, 4082, 5044, 8164, 10088, 15229, 16328, 16393, 26533, 30458, 32786, 53066, 60916, 65572, 106132, 121832, 131144, 197977, 212264, 395954, 791908, 1583816, 2573701, 5147402, 10294804, 20589608]

約数ペア:

[(1, 20589608), (2, 10294804), (4, 5147402), (8, 2573701), (13, 1583816), (26, 791908), (52, 395954), (97, 212264), (104, 197977), (157, 131144), (169, 121832), (194, 106132), (314, 65572), (338, 60916), (388, 53066), (628, 32786), (676, 30458), (776, 26533), (1256, 16393), (1261, 16328), (1352, 15229), (2041, 10088), (2522, 8164), (4082, 5044)]