84721520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{81463}}^1$

素因数の和:81489

約数の個数: 40

約数和(自身を含む): 212132256

約数和(自身を除く): 127410736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 81463, 162926, 325852, 407315, 651704, 814630, 1059019, 1303408, 1629260, 2118038, 3258520, 4236076, 5295095, 6517040, 8472152, 10590190, 16944304, 21180380, 42360760, 84721520]

約数ペア:

[(1, 84721520), (2, 42360760), (4, 21180380), (5, 16944304), (8, 10590190), (10, 8472152), (13, 6517040), (16, 5295095), (20, 4236076), (26, 3258520), (40, 2118038), (52, 1629260), (65, 1303408), (80, 1059019), (104, 814630), (130, 651704), (208, 407315), (260, 325852), (520, 162926), (1040, 81463)]