20443437

素因数分解:

$3^2\times 7^2\times {\mathrm{151}}^1\times {\mathrm{307}}^1$

素因数の和:478

約数の個数: 36

約数和(自身を含む): 34690656

約数和(自身を除く): 14247219

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 151, 307, 441, 453, 921, 1057, 1359, 2149, 2763, 3171, 6447, 7399, 9513, 15043, 19341, 22197, 45129, 46357, 66591, 135387, 139071, 324499, 417213, 973497, 2271493, 2920491, 6814479, 20443437]

約数ペア:

[(1, 20443437), (3, 6814479), (7, 2920491), (9, 2271493), (21, 973497), (49, 417213), (63, 324499), (147, 139071), (151, 135387), (307, 66591), (441, 46357), (453, 45129), (921, 22197), (1057, 19341), (1359, 15043), (2149, 9513), (2763, 7399), (3171, 6447)]