20429325

素因数分解:

$3^2\times 5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1$

素因数の和:156

約数の個数: 108

約数和(自身を含む): 45482580

約数和(自身を除く): 25053255

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 25, 35, 45, 49, 51, 63, 75, 85, 105, 109, 119, 147, 153, 175, 225, 245, 255, 315, 327, 357, 425, 441, 525, 545, 595, 735, 763, 765, 833, 981, 1071, 1225, 1275, 1575, 1635, 1785, 1853, 2205, 2289, 2499, 2725, 2975, 3675, 3815, 3825, 4165, 4905, 5341, 5355, 5559, 6867, 7497, 8175, 8925, 9265, 11025, 11445, 12495, 12971, 16023, 16677, 19075, 20825, 24525, 26705, 26775, 27795, 34335, 37485, 38913, 46325, 48069, 57225, 62475, 64855, 80115, 83385, 90797, 116739, 133525, 138975, 171675, 187425, 194565, 240345, 272391, 324275, 400575, 416925, 453985, 583695, 817173, 972825, 1201725, 1361955, 2269925, 2918475, 4085865, 6809775, 20429325]

約数ペア:

[(1, 20429325), (3, 6809775), (5, 4085865), (7, 2918475), (9, 2269925), (15, 1361955), (17, 1201725), (21, 972825), (25, 817173), (35, 583695), (45, 453985), (49, 416925), (51, 400575), (63, 324275), (75, 272391), (85, 240345), (105, 194565), (109, 187425), (119, 171675), (147, 138975), (153, 133525), (175, 116739), (225, 90797), (245, 83385), (255, 80115), (315, 64855), (327, 62475), (357, 57225), (425, 48069), (441, 46325), (525, 38913), (545, 37485), (595, 34335), (735, 27795), (763, 26775), (765, 26705), (833, 24525), (981, 20825), (1071, 19075), (1225, 16677), (1275, 16023), (1575, 12971), (1635, 12495), (1785, 11445), (1853, 11025), (2205, 9265), (2289, 8925), (2499, 8175), (2725, 7497), (2975, 6867), (3675, 5559), (3815, 5355), (3825, 5341), (4165, 4905)]