19399900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{14923}}^1$

素因数の和:14950

約数の個数: 36

約数和(自身を含む): 45339112

約数和(自身を除く): 25939212

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 14923, 29846, 59692, 74615, 149230, 193999, 298460, 373075, 387998, 746150, 775996, 969995, 1492300, 1939990, 3879980, 4849975, 9699950, 19399900]

約数ペア:

[(1, 19399900), (2, 9699950), (4, 4849975), (5, 3879980), (10, 1939990), (13, 1492300), (20, 969995), (25, 775996), (26, 746150), (50, 387998), (52, 373075), (65, 298460), (100, 193999), (130, 149230), (260, 74615), (325, 59692), (650, 29846), (1300, 14923)]