21511223

素因数分解:

${\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:302

約数の個数: 16

約数和(自身を含む): 22915200

約数和(自身を除く): 1403977

約数列:

[1, 43, 59, 61, 139, 2537, 2623, 3599, 5977, 8201, 8479, 154757, 352643, 364597, 500261, 21511223]

約数ペア:

[(1, 21511223), (43, 500261), (59, 364597), (61, 352643), (139, 154757), (2537, 8479), (2623, 8201), (3599, 5977)]