21996478

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{599}}^1$

素因数の和:712

約数の個数: 32

約数和(自身を含む): 39283200

約数和(自身を除く): 17286722

約数列:

[1, 2, 7, 14, 43, 61, 86, 122, 301, 427, 599, 602, 854, 1198, 2623, 4193, 5246, 8386, 18361, 25757, 36539, 36722, 51514, 73078, 180299, 255773, 360598, 511546, 1571177, 3142354, 10998239, 21996478]

約数ペア:

[(1, 21996478), (2, 10998239), (7, 3142354), (14, 1571177), (43, 511546), (61, 360598), (86, 255773), (122, 180299), (301, 73078), (427, 51514), (599, 36722), (602, 36539), (854, 25757), (1198, 18361), (2623, 8386), (4193, 5246)]