28020735

素因数分解:

$3^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1609}}^1$

素因数の和:1669

約数の個数: 40

約数和(自身を含む): 51429840

約数和(自身を除く): 23409105

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 81, 129, 135, 215, 387, 405, 645, 1161, 1609, 1935, 3483, 4827, 5805, 8045, 14481, 17415, 24135, 43443, 69187, 72405, 130329, 207561, 217215, 345935, 622683, 651645, 1037805, 1868049, 3113415, 5604147, 9340245, 28020735]

約数ペア:

[(1, 28020735), (3, 9340245), (5, 5604147), (9, 3113415), (15, 1868049), (27, 1037805), (43, 651645), (45, 622683), (81, 345935), (129, 217215), (135, 207561), (215, 130329), (387, 72405), (405, 69187), (645, 43443), (1161, 24135), (1609, 17415), (1935, 14481), (3483, 8045), (4827, 5805)]