21000638865

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{408533}}^1$

素因数の和:408713

約数の個数: 32

約数和(自身を含む): 35297337600

約数和(自身を除く): 14296698735

約数列:

[1, 3, 5, 15, 23, 69, 115, 149, 345, 447, 745, 2235, 3427, 10281, 17135, 51405, 408533, 1225599, 2042665, 6127995, 9396259, 28188777, 46981295, 60871417, 140943885, 182614251, 304357085, 913071255, 1400042591, 4200127773, 7000212955, 21000638865]

約数ペア:

[(1, 21000638865), (3, 7000212955), (5, 4200127773), (15, 1400042591), (23, 913071255), (69, 304357085), (115, 182614251), (149, 140943885), (345, 60871417), (447, 46981295), (745, 28188777), (2235, 9396259), (3427, 6127995), (10281, 2042665), (17135, 1225599), (51405, 408533)]