19956716

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{1721}}^1$

素因数の和:1961

約数の個数: 24

約数和(自身を含む): 37801344

約数和(自身を除く): 17844628

約数列:

[1, 2, 4, 13, 26, 52, 223, 446, 892, 1721, 2899, 3442, 5798, 6884, 11596, 22373, 44746, 89492, 383783, 767566, 1535132, 4989179, 9978358, 19956716]

約数ペア:

[(1, 19956716), (2, 9978358), (4, 4989179), (13, 1535132), (26, 767566), (52, 383783), (223, 89492), (446, 44746), (892, 22373), (1721, 11596), (2899, 6884), (3442, 5798)]