28379390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1097}}^1$

素因数の和:1316

約数の個数: 32

約数和(自身を含む): 55339200

約数和(自身を除く): 26959810

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 199, 398, 995, 1097, 1990, 2194, 2587, 5174, 5485, 10970, 12935, 14261, 25870, 28522, 71305, 142610, 218303, 436606, 1091515, 2183030, 2837939, 5675878, 14189695, 28379390]

約数ペア:

[(1, 28379390), (2, 14189695), (5, 5675878), (10, 2837939), (13, 2183030), (26, 1091515), (65, 436606), (130, 218303), (199, 142610), (398, 71305), (995, 28522), (1097, 25870), (1990, 14261), (2194, 12935), (2587, 10970), (5174, 5485)]