20519142

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{983}}^1$

素因数の和:1073

約数の個数: 48

約数和(自身を含む): 48460032

約数和(自身を除く): 27940890

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 71, 98, 142, 147, 213, 294, 426, 497, 983, 994, 1491, 1966, 2949, 2982, 3479, 5898, 6881, 6958, 10437, 13762, 20643, 20874, 41286, 48167, 69793, 96334, 139586, 144501, 209379, 289002, 418758, 488551, 977102, 1465653, 2931306, 3419857, 6839714, 10259571, 20519142]

約数ペア:

[(1, 20519142), (2, 10259571), (3, 6839714), (6, 3419857), (7, 2931306), (14, 1465653), (21, 977102), (42, 488551), (49, 418758), (71, 289002), (98, 209379), (142, 144501), (147, 139586), (213, 96334), (294, 69793), (426, 48167), (497, 41286), (983, 20874), (994, 20643), (1491, 13762), (1966, 10437), (2949, 6958), (2982, 6881), (3479, 5898)]