19702072

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{487}}^1$

素因数の和:895

約数の個数: 32

約数和(自身を含む): 39967200

約数和(自身を除く): 20265128

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 389, 487, 778, 974, 1556, 1948, 3112, 3896, 5057, 6331, 10114, 12662, 20228, 25324, 40456, 50648, 189443, 378886, 757772, 1515544, 2462759, 4925518, 9851036, 19702072]

約数ペア:

[(1, 19702072), (2, 9851036), (4, 4925518), (8, 2462759), (13, 1515544), (26, 757772), (52, 378886), (104, 189443), (389, 50648), (487, 40456), (778, 25324), (974, 20228), (1556, 12662), (1948, 10114), (3112, 6331), (3896, 5057)]