20564384

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{227}}^1$

素因数の和:405

約数の個数: 48

約数和(自身を含む): 43092000

約数和(自身を除く): 22527616

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 149, 152, 227, 298, 304, 454, 596, 608, 908, 1192, 1816, 2384, 2831, 3632, 4313, 4768, 5662, 7264, 8626, 11324, 17252, 22648, 33823, 34504, 45296, 67646, 69008, 90592, 135292, 138016, 270584, 541168, 642637, 1082336, 1285274, 2570548, 5141096, 10282192, 20564384]

約数ペア:

[(1, 20564384), (2, 10282192), (4, 5141096), (8, 2570548), (16, 1285274), (19, 1082336), (32, 642637), (38, 541168), (76, 270584), (149, 138016), (152, 135292), (227, 90592), (298, 69008), (304, 67646), (454, 45296), (596, 34504), (608, 33823), (908, 22648), (1192, 17252), (1816, 11324), (2384, 8626), (2831, 7264), (3632, 5662), (4313, 4768)]