19886427

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:204

約数の個数: 48

約数和(自身を含む): 33078240

約数和(自身を除く): 13191813

約数列:

[1, 3, 9, 11, 33, 37, 61, 89, 99, 111, 183, 267, 333, 407, 549, 671, 801, 979, 1221, 2013, 2257, 2937, 3293, 3663, 5429, 6039, 6771, 8811, 9879, 16287, 20313, 24827, 29637, 36223, 48861, 59719, 74481, 108669, 179157, 200873, 223443, 326007, 537471, 602619, 1807857, 2209603, 6628809, 19886427]

約数ペア:

[(1, 19886427), (3, 6628809), (9, 2209603), (11, 1807857), (33, 602619), (37, 537471), (61, 326007), (89, 223443), (99, 200873), (111, 179157), (183, 108669), (267, 74481), (333, 59719), (407, 48861), (549, 36223), (671, 29637), (801, 24827), (979, 20313), (1221, 16287), (2013, 9879), (2257, 8811), (2937, 6771), (3293, 6039), (3663, 5429)]