21726425

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 33390720

約数和(自身を除く): 11664295

約数列:

[1, 5, 7, 17, 25, 35, 67, 85, 109, 119, 175, 335, 425, 469, 545, 595, 763, 1139, 1675, 1853, 2345, 2725, 2975, 3815, 5695, 7303, 7973, 9265, 11725, 12971, 19075, 28475, 36515, 39865, 46325, 51121, 64855, 124151, 182575, 199325, 255605, 324275, 620755, 869057, 1278025, 3103775, 4345285, 21726425]

約数ペア:

[(1, 21726425), (5, 4345285), (7, 3103775), (17, 1278025), (25, 869057), (35, 620755), (67, 324275), (85, 255605), (109, 199325), (119, 182575), (175, 124151), (335, 64855), (425, 51121), (469, 46325), (545, 39865), (595, 36515), (763, 28475), (1139, 19075), (1675, 12971), (1853, 11725), (2345, 9265), (2725, 7973), (2975, 7303), (3815, 5695)]