21031607997

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{97}}^1\times {\mathrm{45541}}^1$

素因数の和:45690

約数の個数: 36

約数和(自身を含む): 32085340924

約数和(自身を除く): 11053732927

約数列:

[1, 3, 9, 23, 69, 97, 207, 291, 529, 873, 1587, 2231, 4761, 6693, 20079, 45541, 51313, 136623, 153939, 409869, 461817, 1047443, 3142329, 4417477, 9426987, 13252431, 24091189, 39757293, 72273567, 101601971, 216820701, 304805913, 914417739, 2336845333, 7010535999, 21031607997]

約数ペア:

[(1, 21031607997), (3, 7010535999), (9, 2336845333), (23, 914417739), (69, 304805913), (97, 216820701), (207, 101601971), (291, 72273567), (529, 39757293), (873, 24091189), (1587, 13252431), (2231, 9426987), (4761, 4417477), (6693, 3142329), (20079, 1047443), (45541, 461817), (51313, 409869), (136623, 153939)]