15721429745

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{121763}}^1$

素因数の和:121830

約数の個数: 48

約数和(自身を含む): 23986533888

約数和(自身を除く): 8265104143

約数列:

[1, 5, 7, 17, 31, 35, 49, 85, 119, 155, 217, 245, 527, 595, 833, 1085, 1519, 2635, 3689, 4165, 7595, 18445, 25823, 121763, 129115, 608815, 852341, 2069971, 3774653, 4261705, 5966387, 10349855, 14489797, 18873265, 26422571, 29831935, 64169101, 72448985, 101428579, 132112855, 184957997, 320845505, 449183707, 507142895, 924789985, 2245918535, 3144285949, 15721429745]

約数ペア:

[(1, 15721429745), (5, 3144285949), (7, 2245918535), (17, 924789985), (31, 507142895), (35, 449183707), (49, 320845505), (85, 184957997), (119, 132112855), (155, 101428579), (217, 72448985), (245, 64169101), (527, 29831935), (595, 26422571), (833, 18873265), (1085, 14489797), (1519, 10349855), (2635, 5966387), (3689, 4261705), (4165, 3774653), (7595, 2069971), (18445, 852341), (25823, 608815), (121763, 129115)]