20158509

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{419}}^1$

素因数の和:537

約数の個数: 32

約数和(自身を含む): 32256000

約数和(自身を除く): 12097491

約数列:

[1, 3, 7, 21, 29, 79, 87, 203, 237, 419, 553, 609, 1257, 1659, 2291, 2933, 6873, 8799, 12151, 16037, 33101, 36453, 48111, 85057, 99303, 231707, 255171, 695121, 959929, 2879787, 6719503, 20158509]

約数ペア:

[(1, 20158509), (3, 6719503), (7, 2879787), (21, 959929), (29, 695121), (79, 255171), (87, 231707), (203, 99303), (237, 85057), (419, 48111), (553, 36453), (609, 33101), (1257, 16037), (1659, 12151), (2291, 8799), (2933, 6873)]