20189764

素因数分解:

$2^2\times 7^2\times {\mathrm{239}}^1\times {\mathrm{431}}^1$

素因数の和:688

約数の個数: 36

約数和(自身を含む): 41368320

約数和(自身を除く): 21178556

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 239, 431, 478, 862, 956, 1673, 1724, 3017, 3346, 6034, 6692, 11711, 12068, 21119, 23422, 42238, 46844, 84476, 103009, 206018, 412036, 721063, 1442126, 2884252, 5047441, 10094882, 20189764]

約数ペア:

[(1, 20189764), (2, 10094882), (4, 5047441), (7, 2884252), (14, 1442126), (28, 721063), (49, 412036), (98, 206018), (196, 103009), (239, 84476), (431, 46844), (478, 42238), (862, 23422), (956, 21119), (1673, 12068), (1724, 11711), (3017, 6692), (3346, 6034)]