20213205908

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{823}}^1\times {\mathrm{20399}}^1$

素因数の和:21276

約数の個数: 48

約数和(自身を含む): 41418854400

約数和(自身を除く): 21205648492

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 823, 1204, 1646, 3292, 5761, 11522, 20399, 23044, 35389, 40798, 70778, 81596, 141556, 142793, 247723, 285586, 495446, 571172, 877157, 990892, 1754314, 3508628, 6140099, 12280198, 16788377, 24560396, 33576754, 67153508, 117518639, 235037278, 470074556, 721900211, 1443800422, 2887600844, 5053301477, 10106602954, 20213205908]

約数ペア:

[(1, 20213205908), (2, 10106602954), (4, 5053301477), (7, 2887600844), (14, 1443800422), (28, 721900211), (43, 470074556), (86, 235037278), (172, 117518639), (301, 67153508), (602, 33576754), (823, 24560396), (1204, 16788377), (1646, 12280198), (3292, 6140099), (5761, 3508628), (11522, 1754314), (20399, 990892), (23044, 877157), (35389, 571172), (40798, 495446), (70778, 285586), (81596, 247723), (141556, 142793)]