20399328

素因数分解:

$2^5\times 3^2\times {\mathrm{193}}^1\times {\mathrm{367}}^1$

素因数の和:576

約数の個数: 72

約数和(自身を含む): 58470048

約数和(自身を除く): 38070720

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 193, 288, 367, 386, 579, 734, 772, 1101, 1158, 1468, 1544, 1737, 2202, 2316, 2936, 3088, 3303, 3474, 4404, 4632, 5872, 6176, 6606, 6948, 8808, 9264, 11744, 13212, 13896, 17616, 18528, 26424, 27792, 35232, 52848, 55584, 70831, 105696, 141662, 212493, 283324, 424986, 566648, 637479, 849972, 1133296, 1274958, 1699944, 2266592, 2549916, 3399888, 5099832, 6799776, 10199664, 20399328]

約数ペア:

[(1, 20399328), (2, 10199664), (3, 6799776), (4, 5099832), (6, 3399888), (8, 2549916), (9, 2266592), (12, 1699944), (16, 1274958), (18, 1133296), (24, 849972), (32, 637479), (36, 566648), (48, 424986), (72, 283324), (96, 212493), (144, 141662), (193, 105696), (288, 70831), (367, 55584), (386, 52848), (579, 35232), (734, 27792), (772, 26424), (1101, 18528), (1158, 17616), (1468, 13896), (1544, 13212), (1737, 11744), (2202, 9264), (2316, 8808), (2936, 6948), (3088, 6606), (3303, 6176), (3474, 5872), (4404, 4632)]