20393898

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{977}}^1$

素因数の和:1067

約数の個数: 48

約数和(自身を含む): 48164544

約数和(自身を除く): 27770646

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 71, 98, 142, 147, 213, 294, 426, 497, 977, 994, 1491, 1954, 2931, 2982, 3479, 5862, 6839, 6958, 10437, 13678, 20517, 20874, 41034, 47873, 69367, 95746, 138734, 143619, 208101, 287238, 416202, 485569, 971138, 1456707, 2913414, 3398983, 6797966, 10196949, 20393898]

約数ペア:

[(1, 20393898), (2, 10196949), (3, 6797966), (6, 3398983), (7, 2913414), (14, 1456707), (21, 971138), (42, 485569), (49, 416202), (71, 287238), (98, 208101), (142, 143619), (147, 138734), (213, 95746), (294, 69367), (426, 47873), (497, 41034), (977, 20874), (994, 20517), (1491, 13678), (1954, 10437), (2931, 6958), (2982, 6839), (3479, 5862)]