20128416

素因数分解:

$2^5\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{389}}^1$

素因数の和:427

約数の個数: 144

約数和(自身を含む): 67223520

約数和(自身を除く): 47095104

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 21, 22, 24, 28, 32, 33, 42, 44, 48, 49, 56, 66, 77, 84, 88, 96, 98, 112, 132, 147, 154, 168, 176, 196, 224, 231, 264, 294, 308, 336, 352, 389, 392, 462, 528, 539, 588, 616, 672, 778, 784, 924, 1056, 1078, 1167, 1176, 1232, 1556, 1568, 1617, 1848, 2156, 2334, 2352, 2464, 2723, 3112, 3234, 3696, 4279, 4312, 4668, 4704, 5446, 6224, 6468, 7392, 8169, 8558, 8624, 9336, 10892, 12448, 12837, 12936, 16338, 17116, 17248, 18672, 19061, 21784, 25674, 25872, 29953, 32676, 34232, 37344, 38122, 43568, 51348, 51744, 57183, 59906, 65352, 68464, 76244, 87136, 89859, 102696, 114366, 119812, 130704, 136928, 152488, 179718, 205392, 209671, 228732, 239624, 261408, 304976, 359436, 410784, 419342, 457464, 479248, 609952, 629013, 718872, 838684, 914928, 958496, 1258026, 1437744, 1677368, 1829856, 2516052, 2875488, 3354736, 5032104, 6709472, 10064208, 20128416]

約数ペア:

[(1, 20128416), (2, 10064208), (3, 6709472), (4, 5032104), (6, 3354736), (7, 2875488), (8, 2516052), (11, 1829856), (12, 1677368), (14, 1437744), (16, 1258026), (21, 958496), (22, 914928), (24, 838684), (28, 718872), (32, 629013), (33, 609952), (42, 479248), (44, 457464), (48, 419342), (49, 410784), (56, 359436), (66, 304976), (77, 261408), (84, 239624), (88, 228732), (96, 209671), (98, 205392), (112, 179718), (132, 152488), (147, 136928), (154, 130704), (168, 119812), (176, 114366), (196, 102696), (224, 89859), (231, 87136), (264, 76244), (294, 68464), (308, 65352), (336, 59906), (352, 57183), (389, 51744), (392, 51348), (462, 43568), (528, 38122), (539, 37344), (588, 34232), (616, 32676), (672, 29953), (778, 25872), (784, 25674), (924, 21784), (1056, 19061), (1078, 18672), (1167, 17248), (1176, 17116), (1232, 16338), (1556, 12936), (1568, 12837), (1617, 12448), (1848, 10892), (2156, 9336), (2334, 8624), (2352, 8558), (2464, 8169), (2723, 7392), (3112, 6468), (3234, 6224), (3696, 5446), (4279, 4704), (4312, 4668)]