20576205

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2069}}^1$

素因数の和:2110

約数の個数: 48

約数和(自身を含む): 40687920

約数和(自身を除く): 20111715

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 195, 221, 255, 585, 663, 765, 1105, 1989, 2069, 3315, 6207, 9945, 10345, 18621, 26897, 31035, 35173, 80691, 93105, 105519, 134485, 175865, 242073, 316557, 403455, 457249, 527595, 1210365, 1371747, 1582785, 2286245, 4115241, 6858735, 20576205]

約数ペア:

[(1, 20576205), (3, 6858735), (5, 4115241), (9, 2286245), (13, 1582785), (15, 1371747), (17, 1210365), (39, 527595), (45, 457249), (51, 403455), (65, 316557), (85, 242073), (117, 175865), (153, 134485), (195, 105519), (221, 93105), (255, 80691), (585, 35173), (663, 31035), (765, 26897), (1105, 18621), (1989, 10345), (2069, 9945), (3315, 6207)]