18302020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3617}}^1$

素因数の和:3660

約数の個数: 48

約数和(自身を含む): 43763328

約数和(自身を除く): 25461308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 220, 230, 253, 460, 506, 1012, 1265, 2530, 3617, 5060, 7234, 14468, 18085, 36170, 39787, 72340, 79574, 83191, 159148, 166382, 198935, 332764, 397870, 415955, 795740, 831910, 915101, 1663820, 1830202, 3660404, 4575505, 9151010, 18302020]

約数ペア:

[(1, 18302020), (2, 9151010), (4, 4575505), (5, 3660404), (10, 1830202), (11, 1663820), (20, 915101), (22, 831910), (23, 795740), (44, 415955), (46, 397870), (55, 332764), (92, 198935), (110, 166382), (115, 159148), (220, 83191), (230, 79574), (253, 72340), (460, 39787), (506, 36170), (1012, 18085), (1265, 14468), (2530, 7234), (3617, 5060)]