19397728

素因数分解:

$2^5\times 7^2\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:252

約数の個数: 72

約数和(自身を含む): 45246600

約数和(自身を除く): 25848872

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 89, 98, 112, 139, 178, 196, 224, 278, 356, 392, 556, 623, 712, 784, 973, 1112, 1246, 1424, 1568, 1946, 2224, 2492, 2848, 3892, 4361, 4448, 4984, 6811, 7784, 8722, 9968, 12371, 13622, 15568, 17444, 19936, 24742, 27244, 31136, 34888, 49484, 54488, 69776, 86597, 98968, 108976, 139552, 173194, 197936, 217952, 346388, 395872, 606179, 692776, 1212358, 1385552, 2424716, 2771104, 4849432, 9698864, 19397728]

約数ペア:

[(1, 19397728), (2, 9698864), (4, 4849432), (7, 2771104), (8, 2424716), (14, 1385552), (16, 1212358), (28, 692776), (32, 606179), (49, 395872), (56, 346388), (89, 217952), (98, 197936), (112, 173194), (139, 139552), (178, 108976), (196, 98968), (224, 86597), (278, 69776), (356, 54488), (392, 49484), (556, 34888), (623, 31136), (712, 27244), (784, 24742), (973, 19936), (1112, 17444), (1246, 15568), (1424, 13622), (1568, 12371), (1946, 9968), (2224, 8722), (2492, 7784), (2848, 6811), (3892, 4984), (4361, 4448)]