19985385

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{27191}}^1$

素因数の和:27213

約数の個数: 24

約数和(自身を含む): 37198656

約数和(自身を除く): 17213271

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 27191, 81573, 135955, 190337, 407865, 571011, 951685, 1332359, 2855055, 3997077, 6661795, 19985385]

約数ペア:

[(1, 19985385), (3, 6661795), (5, 3997077), (7, 2855055), (15, 1332359), (21, 951685), (35, 571011), (49, 407865), (105, 190337), (147, 135955), (245, 81573), (735, 27191)]