19991628

素因数分解:

$2^2\times 3^2\times {\mathrm{149}}^1\times {\mathrm{3727}}^1$

素因数の和:3886

約数の個数: 36

約数和(自身を含む): 50887200

約数和(自身を除く): 30895572

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 149, 298, 447, 596, 894, 1341, 1788, 2682, 3727, 5364, 7454, 11181, 14908, 22362, 33543, 44724, 67086, 134172, 555323, 1110646, 1665969, 2221292, 3331938, 4997907, 6663876, 9995814, 19991628]

約数ペア:

[(1, 19991628), (2, 9995814), (3, 6663876), (4, 4997907), (6, 3331938), (9, 2221292), (12, 1665969), (18, 1110646), (36, 555323), (149, 134172), (298, 67086), (447, 44724), (596, 33543), (894, 22362), (1341, 14908), (1788, 11181), (2682, 7454), (3727, 5364)]