20552740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{577}}^1$

素因数の和:736

約数の個数: 48

約数和(自身を含む): 46901232

約数和(自身を除く): 26348492

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 137, 260, 274, 548, 577, 685, 1154, 1370, 1781, 2308, 2740, 2885, 3562, 5770, 7124, 7501, 8905, 11540, 15002, 17810, 30004, 35620, 37505, 75010, 79049, 150020, 158098, 316196, 395245, 790490, 1027637, 1580980, 2055274, 4110548, 5138185, 10276370, 20552740]

約数ペア:

[(1, 20552740), (2, 10276370), (4, 5138185), (5, 4110548), (10, 2055274), (13, 1580980), (20, 1027637), (26, 790490), (52, 395245), (65, 316196), (130, 158098), (137, 150020), (260, 79049), (274, 75010), (548, 37505), (577, 35620), (685, 30004), (1154, 17810), (1370, 15002), (1781, 11540), (2308, 8905), (2740, 7501), (2885, 7124), (3562, 5770)]