21210435

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12739}}^1$

素因数の和:12787

約数の個数: 24

約数和(自身を含む): 37761360

約数和(自身を除く): 16550925

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665, 12739, 38217, 63695, 114651, 191085, 471343, 573255, 1414029, 2356715, 4242087, 7070145, 21210435]

約数ペア:

[(1, 21210435), (3, 7070145), (5, 4242087), (9, 2356715), (15, 1414029), (37, 573255), (45, 471343), (111, 191085), (185, 114651), (333, 63695), (555, 38217), (1665, 12739)]