28720874

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:295

約数の個数: 48

約数和(自身を含む): 54460800

約数和(自身を除く): 25739926

約数列:

[1, 2, 7, 13, 14, 26, 61, 91, 122, 169, 182, 199, 338, 398, 427, 793, 854, 1183, 1393, 1586, 2366, 2587, 2786, 5174, 5551, 10309, 11102, 12139, 18109, 20618, 24278, 33631, 36218, 67262, 72163, 84973, 144326, 157807, 169946, 235417, 315614, 470834, 1104649, 2051491, 2209298, 4102982, 14360437, 28720874]

約数ペア:

[(1, 28720874), (2, 14360437), (7, 4102982), (13, 2209298), (14, 2051491), (26, 1104649), (61, 470834), (91, 315614), (122, 235417), (169, 169946), (182, 157807), (199, 144326), (338, 84973), (398, 72163), (427, 67262), (793, 36218), (854, 33631), (1183, 24278), (1393, 20618), (1586, 18109), (2366, 12139), (2587, 11102), (2786, 10309), (5174, 5551)]