19943185

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 26484480

約数和(自身を除く): 6541295

約数列:

[1, 5, 23, 37, 43, 109, 115, 185, 215, 545, 851, 989, 1591, 2507, 4033, 4255, 4687, 4945, 7955, 12535, 20165, 23435, 36593, 92759, 107801, 173419, 182965, 463795, 539005, 867095, 3988637, 19943185]

約数ペア:

[(1, 19943185), (5, 3988637), (23, 867095), (37, 539005), (43, 463795), (109, 182965), (115, 173419), (185, 107801), (215, 92759), (545, 36593), (851, 23435), (989, 20165), (1591, 12535), (2507, 7955), (4033, 4945), (4255, 4687)]