20998236

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{457}}^1\times {\mathrm{547}}^1$

素因数の和:1018

約数の個数: 48

約数和(自身を含む): 56220416

約数和(自身を除く): 35222180

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 457, 547, 914, 1094, 1371, 1641, 1828, 2188, 2742, 3199, 3282, 3829, 5484, 6398, 6564, 7658, 9597, 11487, 12796, 15316, 19194, 22974, 38388, 45948, 249979, 499958, 749937, 999916, 1499874, 1749853, 2999748, 3499706, 5249559, 6999412, 10499118, 20998236]

約数ペア:

[(1, 20998236), (2, 10499118), (3, 6999412), (4, 5249559), (6, 3499706), (7, 2999748), (12, 1749853), (14, 1499874), (21, 999916), (28, 749937), (42, 499958), (84, 249979), (457, 45948), (547, 38388), (914, 22974), (1094, 19194), (1371, 15316), (1641, 12796), (1828, 11487), (2188, 9597), (2742, 7658), (3199, 6564), (3282, 6398), (3829, 5484)]