90172540

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1\times {\mathrm{271}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 193019904

約数和(自身を除く): 102847364

約数列:

[1, 2, 4, 5, 10, 20, 127, 131, 254, 262, 271, 508, 524, 542, 635, 655, 1084, 1270, 1310, 1355, 2540, 2620, 2710, 5420, 16637, 33274, 34417, 35501, 66548, 68834, 71002, 83185, 137668, 142004, 166370, 172085, 177505, 332740, 344170, 355010, 688340, 710020, 4508627, 9017254, 18034508, 22543135, 45086270, 90172540]

約数ペア:

[(1, 90172540), (2, 45086270), (4, 22543135), (5, 18034508), (10, 9017254), (20, 4508627), (127, 710020), (131, 688340), (254, 355010), (262, 344170), (271, 332740), (508, 177505), (524, 172085), (542, 166370), (635, 142004), (655, 137668), (1084, 83185), (1270, 71002), (1310, 68834), (1355, 66548), (2540, 35501), (2620, 34417), (2710, 33274), (5420, 16637)]