21876465

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2609}}^1$

素因数の和:2673

約数の個数: 32

約数和(自身を含む): 38586240

約数和(自身を除く): 16709775

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 195, 215, 559, 645, 1677, 2609, 2795, 7827, 8385, 13045, 33917, 39135, 101751, 112187, 169585, 336561, 508755, 560935, 1458431, 1682805, 4375293, 7292155, 21876465]

約数ペア:

[(1, 21876465), (3, 7292155), (5, 4375293), (13, 1682805), (15, 1458431), (39, 560935), (43, 508755), (65, 336561), (129, 169585), (195, 112187), (215, 101751), (559, 39135), (645, 33917), (1677, 13045), (2609, 8385), (2795, 7827)]