20121418

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{31}}^2$

素因数の和:131

約数の個数: 36

約数和(自身を含む): 34049970

約数和(自身を除く): 13928552

約数列:

[1, 2, 19, 29, 31, 38, 58, 62, 361, 551, 589, 722, 899, 961, 1102, 1178, 1798, 1922, 10469, 11191, 17081, 18259, 20938, 22382, 27869, 34162, 36518, 55738, 324539, 346921, 529511, 649078, 693842, 1059022, 10060709, 20121418]

約数ペア:

[(1, 20121418), (2, 10060709), (19, 1059022), (29, 693842), (31, 649078), (38, 529511), (58, 346921), (62, 324539), (361, 55738), (551, 36518), (589, 34162), (722, 27869), (899, 22382), (961, 20938), (1102, 18259), (1178, 17081), (1798, 11191), (1922, 10469)]