21000480765

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{857}}^1\times {\mathrm{148513}}^1$

素因数の和:149389

約数の個数: 32

約数和(自身を含む): 36698403456

約数和(自身を除く): 15697922691

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 857, 2571, 4285, 9427, 12855, 28281, 47135, 141405, 148513, 445539, 742565, 1633643, 2227695, 4900929, 8168215, 24504645, 127275641, 381826923, 636378205, 1400032051, 1909134615, 4200096153, 7000160255, 21000480765]

約数ペア:

[(1, 21000480765), (3, 7000160255), (5, 4200096153), (11, 1909134615), (15, 1400032051), (33, 636378205), (55, 381826923), (165, 127275641), (857, 24504645), (2571, 8168215), (4285, 4900929), (9427, 2227695), (12855, 1633643), (28281, 742565), (47135, 445539), (141405, 148513)]