21373556

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 21083404

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 71, 76, 142, 233, 284, 323, 466, 646, 932, 1207, 1292, 1349, 2414, 2698, 3961, 4427, 4828, 5396, 7922, 8854, 15844, 16543, 17708, 22933, 33086, 45866, 66172, 75259, 91732, 150518, 281231, 301036, 314317, 562462, 628634, 1124924, 1257268, 5343389, 10686778, 21373556]

約数ペア:

[(1, 21373556), (2, 10686778), (4, 5343389), (17, 1257268), (19, 1124924), (34, 628634), (38, 562462), (68, 314317), (71, 301036), (76, 281231), (142, 150518), (233, 91732), (284, 75259), (323, 66172), (466, 45866), (646, 33086), (932, 22933), (1207, 17708), (1292, 16543), (1349, 15844), (2414, 8854), (2698, 7922), (3961, 5396), (4427, 4828)]