18965115

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1907}}^1$

素因数の和:1948

約数の個数: 48

約数和(自身を含む): 37503648

約数和(自身を除く): 18538533

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 195, 221, 255, 585, 663, 765, 1105, 1907, 1989, 3315, 5721, 9535, 9945, 17163, 24791, 28605, 32419, 74373, 85815, 97257, 123955, 162095, 223119, 291771, 371865, 421447, 486285, 1115595, 1264341, 1458855, 2107235, 3793023, 6321705, 18965115]

約数ペア:

[(1, 18965115), (3, 6321705), (5, 3793023), (9, 2107235), (13, 1458855), (15, 1264341), (17, 1115595), (39, 486285), (45, 421447), (51, 371865), (65, 291771), (85, 223119), (117, 162095), (153, 123955), (195, 97257), (221, 85815), (255, 74373), (585, 32419), (663, 28605), (765, 24791), (1105, 17163), (1907, 9945), (1989, 9535), (3315, 5721)]