20952820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7877}}^1$

素因数の和:7912

約数の個数: 48

約数和(自身を含む): 52940160

約数和(自身を除く): 31987340

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7877, 15754, 31508, 39385, 55139, 78770, 110278, 149663, 157540, 220556, 275695, 299326, 551390, 598652, 748315, 1047641, 1102780, 1496630, 2095282, 2993260, 4190564, 5238205, 10476410, 20952820]

約数ペア:

[(1, 20952820), (2, 10476410), (4, 5238205), (5, 4190564), (7, 2993260), (10, 2095282), (14, 1496630), (19, 1102780), (20, 1047641), (28, 748315), (35, 598652), (38, 551390), (70, 299326), (76, 275695), (95, 220556), (133, 157540), (140, 149663), (190, 110278), (266, 78770), (380, 55139), (532, 39385), (665, 31508), (1330, 15754), (2660, 7877)]