211301415

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{21247}}^1$

素因数の和:21288

約数の個数: 48

約数和(自身を含む): 417650688

約数和(自身を除く): 206349273

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, 3315, 9945, 21247, 63741, 106235, 191223, 276211, 318705, 361199, 828633, 956115, 1083597, 1381055, 1805995, 2485899, 3250791, 4143165, 4695587, 5417985, 12429495, 14086761, 16253955, 23477935, 42260283, 70433805, 211301415]

約数ペア:

[(1, 211301415), (3, 70433805), (5, 42260283), (9, 23477935), (13, 16253955), (15, 14086761), (17, 12429495), (39, 5417985), (45, 4695587), (51, 4143165), (65, 3250791), (85, 2485899), (117, 1805995), (153, 1381055), (195, 1083597), (221, 956115), (255, 828633), (585, 361199), (663, 318705), (765, 276211), (1105, 191223), (1989, 106235), (3315, 63741), (9945, 21247)]