16720820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{227}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 36771840

約数和(自身を除く): 20051020

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 127, 145, 227, 254, 290, 454, 508, 580, 635, 908, 1135, 1270, 2270, 2540, 3683, 4540, 6583, 7366, 13166, 14732, 18415, 26332, 28829, 32915, 36830, 57658, 65830, 73660, 115316, 131660, 144145, 288290, 576580, 836041, 1672082, 3344164, 4180205, 8360410, 16720820]

約数ペア:

[(1, 16720820), (2, 8360410), (4, 4180205), (5, 3344164), (10, 1672082), (20, 836041), (29, 576580), (58, 288290), (116, 144145), (127, 131660), (145, 115316), (227, 73660), (254, 65830), (290, 57658), (454, 36830), (508, 32915), (580, 28829), (635, 26332), (908, 18415), (1135, 14732), (1270, 13166), (2270, 7366), (2540, 6583), (3683, 4540)]