20512017488

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{409}}^1\times {\mathrm{3923}}^1$

素因数の和:4404

約数の個数: 80

約数和(自身を含む): 43091170560

約数和(自身を除く): 22579153072

約数列:

[1, 2, 4, 8, 16, 17, 34, 47, 68, 94, 136, 188, 272, 376, 409, 752, 799, 818, 1598, 1636, 3196, 3272, 3923, 6392, 6544, 6953, 7846, 12784, 13906, 15692, 19223, 27812, 31384, 38446, 55624, 62768, 66691, 76892, 111248, 133382, 153784, 184381, 266764, 307568, 326791, 368762, 533528, 653582, 737524, 1067056, 1307164, 1475048, 1604507, 2614328, 2950096, 3134477, 3209014, 5228656, 6268954, 6418028, 12537908, 12836056, 25075816, 25672112, 27276619, 50151632, 54553238, 75411829, 109106476, 150823658, 218212952, 301647316, 436425904, 603294632, 1206589264, 1282001093, 2564002186, 5128004372, 10256008744, 20512017488]

約数ペア:

[(1, 20512017488), (2, 10256008744), (4, 5128004372), (8, 2564002186), (16, 1282001093), (17, 1206589264), (34, 603294632), (47, 436425904), (68, 301647316), (94, 218212952), (136, 150823658), (188, 109106476), (272, 75411829), (376, 54553238), (409, 50151632), (752, 27276619), (799, 25672112), (818, 25075816), (1598, 12836056), (1636, 12537908), (3196, 6418028), (3272, 6268954), (3923, 5228656), (6392, 3209014), (6544, 3134477), (6953, 2950096), (7846, 2614328), (12784, 1604507), (13906, 1475048), (15692, 1307164), (19223, 1067056), (27812, 737524), (31384, 653582), (38446, 533528), (55624, 368762), (62768, 326791), (66691, 307568), (76892, 266764), (111248, 184381), (133382, 153784)]