20123500384

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{721997}}^1$

素因数の和:722087

約数の個数: 48

約数和(自身を含む): 43302552048

約数和(自身を除く): 23179051664

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 67, 104, 134, 208, 268, 416, 536, 871, 1072, 1742, 2144, 3484, 6968, 13936, 27872, 721997, 1443994, 2887988, 5775976, 9385961, 11551952, 18771922, 23103904, 37543844, 48373799, 75087688, 96747598, 150175376, 193495196, 300350752, 386990392, 628859387, 773980784, 1257718774, 1547961568, 2515437548, 5030875096, 10061750192, 20123500384]

約数ペア:

[(1, 20123500384), (2, 10061750192), (4, 5030875096), (8, 2515437548), (13, 1547961568), (16, 1257718774), (26, 773980784), (32, 628859387), (52, 386990392), (67, 300350752), (104, 193495196), (134, 150175376), (208, 96747598), (268, 75087688), (416, 48373799), (536, 37543844), (871, 23103904), (1072, 18771922), (1742, 11551952), (2144, 9385961), (3484, 5775976), (6968, 2887988), (13936, 1443994), (27872, 721997)]