20791141

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:265

約数の個数: 24

約数和(自身を含む): 25280640

約数和(自身を除く): 4489499

約数列:

[1, 7, 41, 49, 79, 131, 287, 553, 917, 2009, 3239, 3871, 5371, 6419, 10349, 22673, 37597, 72443, 158711, 263179, 424309, 507101, 2970163, 20791141]

約数ペア:

[(1, 20791141), (7, 2970163), (41, 507101), (49, 424309), (79, 263179), (131, 158711), (287, 72443), (553, 37597), (917, 22673), (2009, 10349), (3239, 6419), (3871, 5371)]