81071536

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{55681}}^1$

素因数の和:55709

約数の個数: 40

約数和(自身を含む): 193327904

約数和(自身を除く): 112256368

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 55681, 111362, 222724, 389767, 445448, 723853, 779534, 890896, 1447706, 1559068, 2895412, 3118136, 5066971, 5790824, 6236272, 10133942, 11581648, 20267884, 40535768, 81071536]

約数ペア:

[(1, 81071536), (2, 40535768), (4, 20267884), (7, 11581648), (8, 10133942), (13, 6236272), (14, 5790824), (16, 5066971), (26, 3118136), (28, 2895412), (52, 1559068), (56, 1447706), (91, 890896), (104, 779534), (112, 723853), (182, 445448), (208, 389767), (364, 222724), (728, 111362), (1456, 55681)]