19865556

素因数分解:

$2^2\times 3^2\times {\mathrm{449}}^1\times {\mathrm{1229}}^1$

素因数の和:1688

約数の個数: 36

約数和(自身を含む): 50368500

約数和(自身を除く): 30502944

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 449, 898, 1229, 1347, 1796, 2458, 2694, 3687, 4041, 4916, 5388, 7374, 8082, 11061, 14748, 16164, 22122, 44244, 551821, 1103642, 1655463, 2207284, 3310926, 4966389, 6621852, 9932778, 19865556]

約数ペア:

[(1, 19865556), (2, 9932778), (3, 6621852), (4, 4966389), (6, 3310926), (9, 2207284), (12, 1655463), (18, 1103642), (36, 551821), (449, 44244), (898, 22122), (1229, 16164), (1347, 14748), (1796, 11061), (2458, 8082), (2694, 7374), (3687, 5388), (4041, 4916)]