21168508

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{3923}}^1$

素因数の和:4017

約数の個数: 24

約数和(自身を含む): 39553920

約数和(自身を除く): 18385412

約数列:

[1, 2, 4, 19, 38, 71, 76, 142, 284, 1349, 2698, 3923, 5396, 7846, 15692, 74537, 149074, 278533, 298148, 557066, 1114132, 5292127, 10584254, 21168508]

約数ペア:

[(1, 21168508), (2, 10584254), (4, 5292127), (19, 1114132), (38, 557066), (71, 298148), (76, 278533), (142, 149074), (284, 74537), (1349, 15692), (2698, 7846), (3923, 5396)]