20163984925

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{25307}}^1$

素因数の和:25510

約数の個数: 48

約数和(自身を含む): 29750060160

約数和(自身を除く): 9586075235

約数列:

[1, 5, 7, 25, 29, 35, 145, 157, 175, 203, 725, 785, 1015, 1099, 3925, 4553, 5075, 5495, 22765, 25307, 27475, 31871, 113825, 126535, 159355, 177149, 632675, 733903, 796775, 885745, 3669515, 3973199, 4428725, 5137321, 18347575, 19865995, 25686605, 27812393, 99329975, 115222771, 128433025, 139061965, 576113855, 695309825, 806559397, 2880569275, 4032796985, 20163984925]

約数ペア:

[(1, 20163984925), (5, 4032796985), (7, 2880569275), (25, 806559397), (29, 695309825), (35, 576113855), (145, 139061965), (157, 128433025), (175, 115222771), (203, 99329975), (725, 27812393), (785, 25686605), (1015, 19865995), (1099, 18347575), (3925, 5137321), (4553, 4428725), (5075, 3973199), (5495, 3669515), (22765, 885745), (25307, 796775), (27475, 733903), (31871, 632675), (113825, 177149), (126535, 159355)]