20549997

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{461}}^1$

素因数の和:610

約数の個数: 32

約数和(自身を含む): 33116160

約数和(自身を除く): 12566163

約数列:

[1, 3, 9, 13, 27, 39, 117, 127, 351, 381, 461, 1143, 1383, 1651, 3429, 4149, 4953, 5993, 12447, 14859, 17979, 44577, 53937, 58547, 161811, 175641, 526923, 761111, 1580769, 2283333, 6849999, 20549997]

約数ペア:

[(1, 20549997), (3, 6849999), (9, 2283333), (13, 1580769), (27, 761111), (39, 526923), (117, 175641), (127, 161811), (351, 58547), (381, 53937), (461, 44577), (1143, 17979), (1383, 14859), (1651, 12447), (3429, 5993), (4149, 4953)]