20478538

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:262

約数の個数: 32

約数和(自身を含む): 33269760

約数和(自身を除く): 12791222

約数列:

[1, 2, 31, 37, 62, 74, 79, 113, 158, 226, 1147, 2294, 2449, 2923, 3503, 4181, 4898, 5846, 7006, 8362, 8927, 17854, 90613, 129611, 181226, 259222, 276737, 330299, 553474, 660598, 10239269, 20478538]

約数ペア:

[(1, 20478538), (2, 10239269), (31, 660598), (37, 553474), (62, 330299), (74, 276737), (79, 259222), (113, 181226), (158, 129611), (226, 90613), (1147, 17854), (2294, 8927), (2449, 8362), (2923, 7006), (3503, 5846), (4181, 4898)]