16440385

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 22579200

約数和(自身を除く): 6138815

約数列:

[1, 5, 13, 31, 41, 65, 155, 199, 205, 403, 533, 995, 1271, 2015, 2587, 2665, 6169, 6355, 8159, 12935, 16523, 30845, 40795, 80197, 82615, 106067, 252929, 400985, 530335, 1264645, 3288077, 16440385]

約数ペア:

[(1, 16440385), (5, 3288077), (13, 1264645), (31, 530335), (41, 400985), (65, 252929), (155, 106067), (199, 82615), (205, 80197), (403, 40795), (533, 30845), (995, 16523), (1271, 12935), (2015, 8159), (2587, 6355), (2665, 6169)]