21840987

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{25367}}^1$

素因数の和:25418

約数の個数: 16

約数和(自身を含む): 34094592

約数和(自身を除く): 12253605

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 25367, 76101, 177569, 532707, 1040047, 3120141, 7280329, 21840987]

約数ペア:

[(1, 21840987), (3, 7280329), (7, 3120141), (21, 1040047), (41, 532707), (123, 177569), (287, 76101), (861, 25367)]