20538310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{6869}}^1$

素因数の和:6912

約数の個数: 32

約数和(自身を含む): 41549760

約数和(自身を除く): 21011450

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 230, 299, 598, 1495, 2990, 6869, 13738, 34345, 68690, 89297, 157987, 178594, 315974, 446485, 789935, 892970, 1579870, 2053831, 4107662, 10269155, 20538310]

約数ペア:

[(1, 20538310), (2, 10269155), (5, 4107662), (10, 2053831), (13, 1579870), (23, 892970), (26, 789935), (46, 446485), (65, 315974), (115, 178594), (130, 157987), (230, 89297), (299, 68690), (598, 34345), (1495, 13738), (2990, 6869)]