81640215

素因数分解:

$3^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{2753}}^1$

素因数の和:3423

約数の個数: 24

約数和(自身を含む): 141775920

約数和(自身を除く): 60135705

約数列:

[1, 3, 5, 9, 15, 45, 659, 1977, 2753, 3295, 5931, 8259, 9885, 13765, 24777, 29655, 41295, 123885, 1814227, 5442681, 9071135, 16328043, 27213405, 81640215]

約数ペア:

[(1, 81640215), (3, 27213405), (5, 16328043), (9, 9071135), (15, 5442681), (45, 1814227), (659, 123885), (1977, 41295), (2753, 29655), (3295, 24777), (5931, 13765), (8259, 9885)]