21714580

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 46992960

約数和(自身を除く): 25278380

約数列:

[1, 2, 4, 5, 10, 20, 73, 107, 139, 146, 214, 278, 292, 365, 428, 535, 556, 695, 730, 1070, 1390, 1460, 2140, 2780, 7811, 10147, 14873, 15622, 20294, 29746, 31244, 39055, 40588, 50735, 59492, 74365, 78110, 101470, 148730, 156220, 202940, 297460, 1085729, 2171458, 4342916, 5428645, 10857290, 21714580]

約数ペア:

[(1, 21714580), (2, 10857290), (4, 5428645), (5, 4342916), (10, 2171458), (20, 1085729), (73, 297460), (107, 202940), (139, 156220), (146, 148730), (214, 101470), (278, 78110), (292, 74365), (365, 59492), (428, 50735), (535, 40588), (556, 39055), (695, 31244), (730, 29746), (1070, 20294), (1390, 15622), (1460, 14873), (2140, 10147), (2780, 7811)]