19977585

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{659}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 33454080

約数和(自身を除く): 13476495

約数列:

[1, 3, 5, 15, 43, 47, 129, 141, 215, 235, 645, 659, 705, 1977, 2021, 3295, 6063, 9885, 10105, 28337, 30315, 30973, 85011, 92919, 141685, 154865, 425055, 464595, 1331839, 3995517, 6659195, 19977585]

約数ペア:

[(1, 19977585), (3, 6659195), (5, 3995517), (15, 1331839), (43, 464595), (47, 425055), (129, 154865), (141, 141685), (215, 92919), (235, 85011), (645, 30973), (659, 30315), (705, 28337), (1977, 10105), (2021, 9885), (3295, 6063)]