20515721898

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{769}}^1\times {\mathrm{881}}^1$

素因数の和:1772

約数の個数: 96

約数和(自身を含む): 48311303040

約数和(自身を除く): 27795581142

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 103, 147, 206, 294, 309, 618, 721, 769, 881, 1442, 1538, 1762, 2163, 2307, 2643, 4326, 4614, 5047, 5286, 5383, 6167, 10094, 10766, 12334, 15141, 16149, 18501, 30282, 32298, 37002, 37681, 43169, 75362, 79207, 86338, 90743, 113043, 129507, 158414, 181486, 226086, 237621, 259014, 272229, 475242, 544458, 554449, 635201, 677489, 1108898, 1270402, 1354978, 1663347, 1905603, 2032467, 3326694, 3811206, 3881143, 4064934, 4446407, 4742423, 7762286, 8892814, 9484846, 11643429, 13339221, 14227269, 23286858, 26678442, 28454538, 33196961, 66393922, 69781367, 99590883, 139562734, 199181766, 209344101, 418688202, 488469569, 976939138, 1465408707, 2930817414, 3419286983, 6838573966, 10257860949, 20515721898]

約数ペア:

[(1, 20515721898), (2, 10257860949), (3, 6838573966), (6, 3419286983), (7, 2930817414), (14, 1465408707), (21, 976939138), (42, 488469569), (49, 418688202), (98, 209344101), (103, 199181766), (147, 139562734), (206, 99590883), (294, 69781367), (309, 66393922), (618, 33196961), (721, 28454538), (769, 26678442), (881, 23286858), (1442, 14227269), (1538, 13339221), (1762, 11643429), (2163, 9484846), (2307, 8892814), (2643, 7762286), (4326, 4742423), (4614, 4446407), (5047, 4064934), (5286, 3881143), (5383, 3811206), (6167, 3326694), (10094, 2032467), (10766, 1905603), (12334, 1663347), (15141, 1354978), (16149, 1270402), (18501, 1108898), (30282, 677489), (32298, 635201), (37002, 554449), (37681, 544458), (43169, 475242), (75362, 272229), (79207, 259014), (86338, 237621), (90743, 226086), (113043, 181486), (129507, 158414)]