28478685

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{659}}^1$

素因数の和:777

約数の個数: 32

約数和(自身を含む): 47393280

約数和(自身を除く): 18914595

約数列:

[1, 3, 5, 15, 43, 67, 129, 201, 215, 335, 645, 659, 1005, 1977, 2881, 3295, 8643, 9885, 14405, 28337, 43215, 44153, 85011, 132459, 141685, 220765, 425055, 662295, 1898579, 5695737, 9492895, 28478685]

約数ペア:

[(1, 28478685), (3, 9492895), (5, 5695737), (15, 1898579), (43, 662295), (67, 425055), (129, 220765), (201, 141685), (215, 132459), (335, 85011), (645, 44153), (659, 43215), (1005, 28337), (1977, 14405), (2881, 9885), (3295, 8643)]