21168756

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{28001}}^1$

素因数の和:28021

約数の個数: 48

約数和(自身を含む): 62724480

約数和(自身を除く): 41555724

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 28001, 56002, 84003, 112004, 168006, 196007, 252009, 336012, 392014, 504018, 588021, 756027, 784028, 1008036, 1176042, 1512054, 1764063, 2352084, 3024108, 3528126, 5292189, 7056252, 10584378, 21168756]

約数ペア:

[(1, 21168756), (2, 10584378), (3, 7056252), (4, 5292189), (6, 3528126), (7, 3024108), (9, 2352084), (12, 1764063), (14, 1512054), (18, 1176042), (21, 1008036), (27, 784028), (28, 756027), (36, 588021), (42, 504018), (54, 392014), (63, 336012), (84, 252009), (108, 196007), (126, 168006), (189, 112004), (252, 84003), (378, 56002), (756, 28001)]