15721812351

素因数分解:

$3^2\times 7^1\times {\mathrm{409}}^1\times {\mathrm{691}}^1\times {\mathrm{883}}^1$

素因数の和:1996

約数の個数: 48

約数和(自身を含む): 26084081920

約数和(自身を除く): 10362269569

約数列:

[1, 3, 7, 9, 21, 63, 409, 691, 883, 1227, 2073, 2649, 2863, 3681, 4837, 6181, 6219, 7947, 8589, 14511, 18543, 25767, 43533, 55629, 282619, 361147, 610153, 847857, 1083441, 1830459, 1978333, 2528029, 2543571, 3250323, 4271071, 5491377, 5934999, 7584087, 12813213, 17804997, 22752261, 38439639, 249552577, 748657731, 1746868039, 2245973193, 5240604117, 15721812351]

約数ペア:

[(1, 15721812351), (3, 5240604117), (7, 2245973193), (9, 1746868039), (21, 748657731), (63, 249552577), (409, 38439639), (691, 22752261), (883, 17804997), (1227, 12813213), (2073, 7584087), (2649, 5934999), (2863, 5491377), (3681, 4271071), (4837, 3250323), (6181, 2543571), (6219, 2528029), (7947, 1978333), (8589, 1830459), (14511, 1083441), (18543, 847857), (25767, 610153), (43533, 361147), (55629, 282619)]