20509424

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{653}}^1$

素因数の和:825

約数の個数: 40

約数和(自身を含む): 43143072

約数和(自身を除く): 22633648

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 151, 208, 302, 604, 653, 1208, 1306, 1963, 2416, 2612, 3926, 5224, 7852, 8489, 10448, 15704, 16978, 31408, 33956, 67912, 98603, 135824, 197206, 394412, 788824, 1281839, 1577648, 2563678, 5127356, 10254712, 20509424]

約数ペア:

[(1, 20509424), (2, 10254712), (4, 5127356), (8, 2563678), (13, 1577648), (16, 1281839), (26, 788824), (52, 394412), (104, 197206), (151, 135824), (208, 98603), (302, 67912), (604, 33956), (653, 31408), (1208, 16978), (1306, 15704), (1963, 10448), (2416, 8489), (2612, 7852), (3926, 5224)]