20197408

素因数分解:

$2^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1171}}^1$

素因数の和:1206

約数の個数: 72

約数和(自身を含む): 50503824

約数和(自身を除く): 30306416

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 49, 56, 77, 88, 98, 112, 154, 176, 196, 224, 308, 352, 392, 539, 616, 784, 1078, 1171, 1232, 1568, 2156, 2342, 2464, 4312, 4684, 8197, 8624, 9368, 12881, 16394, 17248, 18736, 25762, 32788, 37472, 51524, 57379, 65576, 90167, 103048, 114758, 131152, 180334, 206096, 229516, 262304, 360668, 412192, 459032, 631169, 721336, 918064, 1262338, 1442672, 1836128, 2524676, 2885344, 5049352, 10098704, 20197408]

約数ペア:

[(1, 20197408), (2, 10098704), (4, 5049352), (7, 2885344), (8, 2524676), (11, 1836128), (14, 1442672), (16, 1262338), (22, 918064), (28, 721336), (32, 631169), (44, 459032), (49, 412192), (56, 360668), (77, 262304), (88, 229516), (98, 206096), (112, 180334), (154, 131152), (176, 114758), (196, 103048), (224, 90167), (308, 65576), (352, 57379), (392, 51524), (539, 37472), (616, 32788), (784, 25762), (1078, 18736), (1171, 17248), (1232, 16394), (1568, 12881), (2156, 9368), (2342, 8624), (2464, 8197), (4312, 4684)]