28720432

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{138079}}^1$

素因数の和:138100

約数の個数: 20

約数和(自身を含む): 59926720

約数和(自身を除く): 31206288

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 138079, 276158, 552316, 1104632, 1795027, 2209264, 3590054, 7180108, 14360216, 28720432]

約数ペア:

[(1, 28720432), (2, 14360216), (4, 7180108), (8, 3590054), (13, 2209264), (16, 1795027), (26, 1104632), (52, 552316), (104, 276158), (208, 138079)]