21294584

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{263}}^1\times {\mathrm{349}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 20285416

約数列:

[1, 2, 4, 8, 29, 58, 116, 232, 263, 349, 526, 698, 1052, 1396, 2104, 2792, 7627, 10121, 15254, 20242, 30508, 40484, 61016, 80968, 91787, 183574, 367148, 734296, 2661823, 5323646, 10647292, 21294584]

約数ペア:

[(1, 21294584), (2, 10647292), (4, 5323646), (8, 2661823), (29, 734296), (58, 367148), (116, 183574), (232, 91787), (263, 80968), (349, 61016), (526, 40484), (698, 30508), (1052, 20242), (1396, 15254), (2104, 10121), (2792, 7627)]