20871088

素因数分解:

$2^4\times 7^1\times {\mathrm{307}}^1\times {\mathrm{607}}^1$

素因数の和:929

約数の個数: 40

約数和(自身を含む): 46441472

約数和(自身を除く): 25570384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 307, 607, 614, 1214, 1228, 2149, 2428, 2456, 4249, 4298, 4856, 4912, 8498, 8596, 9712, 16996, 17192, 33992, 34384, 67984, 186349, 372698, 745396, 1304443, 1490792, 2608886, 2981584, 5217772, 10435544, 20871088]

約数ペア:

[(1, 20871088), (2, 10435544), (4, 5217772), (7, 2981584), (8, 2608886), (14, 1490792), (16, 1304443), (28, 745396), (56, 372698), (112, 186349), (307, 67984), (607, 34384), (614, 33992), (1214, 17192), (1228, 16996), (2149, 9712), (2428, 8596), (2456, 8498), (4249, 4912), (4298, 4856)]