21203872

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{313}}^1$

素因数の和:425

約数の個数: 48

約数和(自身を含む): 43916040

約数和(自身を除く): 22712168

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 73, 116, 146, 232, 292, 313, 464, 584, 626, 928, 1168, 1252, 2117, 2336, 2504, 4234, 5008, 8468, 9077, 10016, 16936, 18154, 22849, 33872, 36308, 45698, 67744, 72616, 91396, 145232, 182792, 290464, 365584, 662621, 731168, 1325242, 2650484, 5300968, 10601936, 21203872]

約数ペア:

[(1, 21203872), (2, 10601936), (4, 5300968), (8, 2650484), (16, 1325242), (29, 731168), (32, 662621), (58, 365584), (73, 290464), (116, 182792), (146, 145232), (232, 91396), (292, 72616), (313, 67744), (464, 45698), (584, 36308), (626, 33872), (928, 22849), (1168, 18154), (1252, 16936), (2117, 10016), (2336, 9077), (2504, 8468), (4234, 5008)]