20509117888

素因数分解:

$2^6\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1476751}}^1$

素因数の和:1476801

約数の個数: 56

約数和(自身を含む): 48012161024

約数和(自身を除く): 27503043136

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 217, 224, 248, 434, 448, 496, 868, 992, 1736, 1984, 3472, 6944, 13888, 1476751, 2953502, 5907004, 10337257, 11814008, 20674514, 23628016, 41349028, 45779281, 47256032, 82698056, 91558562, 94512064, 165396112, 183117124, 320454967, 330792224, 366234248, 640909934, 661584448, 732468496, 1281819868, 1464936992, 2563639736, 2929873984, 5127279472, 10254558944, 20509117888]

約数ペア:

[(1, 20509117888), (2, 10254558944), (4, 5127279472), (7, 2929873984), (8, 2563639736), (14, 1464936992), (16, 1281819868), (28, 732468496), (31, 661584448), (32, 640909934), (56, 366234248), (62, 330792224), (64, 320454967), (112, 183117124), (124, 165396112), (217, 94512064), (224, 91558562), (248, 82698056), (434, 47256032), (448, 45779281), (496, 41349028), (868, 23628016), (992, 20674514), (1736, 11814008), (1984, 10337257), (3472, 5907004), (6944, 2953502), (13888, 1476751)]