81221660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{8443}}^1$

素因数の和:8502

約数の個数: 48

約数和(自身を含む): 188672736

約数和(自身を除く): 107451076

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2405, 4810, 8443, 9620, 16886, 33772, 42215, 84430, 109759, 168860, 219518, 312391, 439036, 548795, 624782, 1097590, 1249564, 1561955, 2195180, 3123910, 4061083, 6247820, 8122166, 16244332, 20305415, 40610830, 81221660]

約数ペア:

[(1, 81221660), (2, 40610830), (4, 20305415), (5, 16244332), (10, 8122166), (13, 6247820), (20, 4061083), (26, 3123910), (37, 2195180), (52, 1561955), (65, 1249564), (74, 1097590), (130, 624782), (148, 548795), (185, 439036), (260, 312391), (370, 219518), (481, 168860), (740, 109759), (962, 84430), (1924, 42215), (2405, 33772), (4810, 16886), (8443, 9620)]