20357792

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{6991}}^1$

素因数の和:7021

約数の個数: 48

約数和(自身を含む): 49335552

約数和(自身を除く): 28977760

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 6991, 13982, 27964, 48937, 55928, 90883, 97874, 111856, 181766, 195748, 223712, 363532, 391496, 636181, 727064, 782992, 1272362, 1454128, 1565984, 2544724, 2908256, 5089448, 10178896, 20357792]

約数ペア:

[(1, 20357792), (2, 10178896), (4, 5089448), (7, 2908256), (8, 2544724), (13, 1565984), (14, 1454128), (16, 1272362), (26, 782992), (28, 727064), (32, 636181), (52, 391496), (56, 363532), (91, 223712), (104, 195748), (112, 181766), (182, 111856), (208, 97874), (224, 90883), (364, 55928), (416, 48937), (728, 27964), (1456, 13982), (2912, 6991)]