20128878

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:179

約数の個数: 128

約数和(自身を含む): 57507840

約数和(自身を除く): 37378962

約数列:

[1, 2, 3, 6, 7, 9, 11, 14, 18, 21, 22, 27, 33, 42, 47, 54, 63, 66, 77, 94, 99, 103, 126, 141, 154, 189, 198, 206, 231, 282, 297, 309, 329, 378, 423, 462, 517, 594, 618, 658, 693, 721, 846, 927, 987, 1034, 1133, 1269, 1386, 1442, 1551, 1854, 1974, 2079, 2163, 2266, 2538, 2781, 2961, 3102, 3399, 3619, 4158, 4326, 4653, 4841, 5562, 5922, 6489, 6798, 7238, 7931, 8883, 9306, 9682, 10197, 10857, 12978, 13959, 14523, 15862, 17766, 19467, 20394, 21714, 23793, 27918, 29046, 30591, 32571, 33887, 38934, 43569, 47586, 53251, 61182, 65142, 67774, 71379, 87138, 97713, 101661, 106502, 130707, 142758, 159753, 195426, 203322, 214137, 261414, 304983, 319506, 372757, 428274, 479259, 609966, 745514, 914949, 958518, 1118271, 1437777, 1829898, 2236542, 2875554, 3354813, 6709626, 10064439, 20128878]

約数ペア:

[(1, 20128878), (2, 10064439), (3, 6709626), (6, 3354813), (7, 2875554), (9, 2236542), (11, 1829898), (14, 1437777), (18, 1118271), (21, 958518), (22, 914949), (27, 745514), (33, 609966), (42, 479259), (47, 428274), (54, 372757), (63, 319506), (66, 304983), (77, 261414), (94, 214137), (99, 203322), (103, 195426), (126, 159753), (141, 142758), (154, 130707), (189, 106502), (198, 101661), (206, 97713), (231, 87138), (282, 71379), (297, 67774), (309, 65142), (329, 61182), (378, 53251), (423, 47586), (462, 43569), (517, 38934), (594, 33887), (618, 32571), (658, 30591), (693, 29046), (721, 27918), (846, 23793), (927, 21714), (987, 20394), (1034, 19467), (1133, 17766), (1269, 15862), (1386, 14523), (1442, 13959), (1551, 12978), (1854, 10857), (1974, 10197), (2079, 9682), (2163, 9306), (2266, 8883), (2538, 7931), (2781, 7238), (2961, 6798), (3102, 6489), (3399, 5922), (3619, 5562), (4158, 4841), (4326, 4653)]