21384538

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4729}}^1$

素因数の和:4774

約数の個数: 32

約数和(自身を含む): 40867200

約数和(自身を除く): 19482662

約数列:

[1, 2, 7, 14, 17, 19, 34, 38, 119, 133, 238, 266, 323, 646, 2261, 4522, 4729, 9458, 33103, 66206, 80393, 89851, 160786, 179702, 562751, 628957, 1125502, 1257914, 1527467, 3054934, 10692269, 21384538]

約数ペア:

[(1, 21384538), (2, 10692269), (7, 3054934), (14, 1527467), (17, 1257914), (19, 1125502), (34, 628957), (38, 562751), (119, 179702), (133, 160786), (238, 89851), (266, 80393), (323, 66206), (646, 33103), (2261, 9458), (4522, 4729)]