20551923

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1607}}^1$

素因数の和:1656

約数の個数: 36

約数和(自身を含む): 35745840

約数和(自身を除く): 15193917

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1421, 1607, 1827, 4263, 4821, 11249, 12789, 14463, 33747, 46603, 78743, 101241, 139809, 236229, 326221, 419427, 708687, 978663, 2283547, 2935989, 6850641, 20551923]

約数ペア:

[(1, 20551923), (3, 6850641), (7, 2935989), (9, 2283547), (21, 978663), (29, 708687), (49, 419427), (63, 326221), (87, 236229), (147, 139809), (203, 101241), (261, 78743), (441, 46603), (609, 33747), (1421, 14463), (1607, 12789), (1827, 11249), (4263, 4821)]