20842493

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{191}}^1$

素因数の和:353

約数の個数: 24

約数和(自身を含む): 26002944

約数和(自身を除く): 5160451

約数列:

[1, 7, 17, 49, 119, 131, 191, 833, 917, 1337, 2227, 3247, 6419, 9359, 15589, 22729, 25021, 109123, 159103, 175147, 425357, 1226029, 2977499, 20842493]

約数ペア:

[(1, 20842493), (7, 2977499), (17, 1226029), (49, 425357), (119, 175147), (131, 159103), (191, 109123), (833, 25021), (917, 22729), (1337, 15589), (2227, 9359), (3247, 6419)]